./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 23:50:35,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 23:50:35,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 23:50:35,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 23:50:35,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 23:50:35,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 23:50:35,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 23:50:35,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 23:50:35,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 23:50:35,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 23:50:35,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 23:50:35,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 23:50:35,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 23:50:35,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 23:50:35,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 23:50:35,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 23:50:35,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 23:50:35,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 23:50:35,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 23:50:35,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 23:50:35,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 23:50:35,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 23:50:35,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 23:50:35,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 23:50:35,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 23:50:35,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 23:50:35,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 23:50:35,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 23:50:35,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 23:50:35,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 23:50:35,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 23:50:35,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 23:50:35,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 23:50:35,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 23:50:35,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 23:50:35,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 23:50:35,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 23:50:35,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 23:50:35,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 23:50:35,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 23:50:35,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 23:50:35,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 23:50:36,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 23:50:36,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 23:50:36,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 23:50:36,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 23:50:36,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 23:50:36,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 23:50:36,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 23:50:36,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 23:50:36,018 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 23:50:36,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 23:50:36,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 23:50:36,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 23:50:36,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 23:50:36,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 23:50:36,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 23:50:36,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 23:50:36,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:50:36,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 23:50:36,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 23:50:36,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 23:50:36,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 23:50:36,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1c027fee61a8058055c949088f7676db617c5b1b19a093573b50c07cbdcbacd [2021-11-16 23:50:36,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 23:50:36,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 23:50:36,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 23:50:36,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 23:50:36,229 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 23:50:36,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-16 23:50:36,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9123ed/a774a11aed594061bd25a04610dcde6a/FLAGe93e1f9d5 [2021-11-16 23:50:37,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 23:50:37,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-16 23:50:37,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9123ed/a774a11aed594061bd25a04610dcde6a/FLAGe93e1f9d5 [2021-11-16 23:50:37,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9123ed/a774a11aed594061bd25a04610dcde6a [2021-11-16 23:50:37,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 23:50:37,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 23:50:37,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 23:50:37,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 23:50:37,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 23:50:37,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:37" (1/1) ... [2021-11-16 23:50:37,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec5db16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:37, skipping insertion in model container [2021-11-16 23:50:37,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:50:37" (1/1) ... [2021-11-16 23:50:37,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 23:50:37,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 23:50:45,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2021-11-16 23:50:46,641 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:50:46,659 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 23:50:47,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/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] [2021-11-16 23:50:47,215 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 23:50:47,432 INFO L208 MainTranslator]: Completed translation [2021-11-16 23:50:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47 WrapperNode [2021-11-16 23:50:47,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 23:50:47,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 23:50:47,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 23:50:47,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 23:50:47,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:47,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:47,859 INFO L137 Inliner]: procedures = 905, calls = 9946, calls flagged for inlining = 323, calls inlined = 188, statements flattened = 12613 [2021-11-16 23:50:47,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 23:50:47,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 23:50:47,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 23:50:47,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 23:50:47,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:47,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:47,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:47,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:48,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:48,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:48,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:48,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 23:50:48,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 23:50:48,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 23:50:48,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 23:50:48,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (1/1) ... [2021-11-16 23:50:48,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 23:50:48,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 23:50:48,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 23:50:48,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 23:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM_page [2021-11-16 23:50:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM_page [2021-11-16 23:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-16 23:50:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_device [2021-11-16 23:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_device [2021-11-16 23:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_status_to_errno [2021-11-16 23:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_status_to_errno [2021-11-16 23:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icms [2021-11-16 23:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icms [2021-11-16 23:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-16 23:50:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-16 23:50:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-16 23:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-16 23:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-16 23:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-16 23:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure adjust_key [2021-11-16 23:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure adjust_key [2021-11-16 23:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure key_to_hw_index [2021-11-16 23:50:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure key_to_hw_index [2021-11-16 23:50:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-16 23:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-16 23:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-16 23:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-16 23:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-16 23:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-16 23:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_icm [2021-11-16 23:50:48,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_icm [2021-11-16 23:50:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-16 23:50:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-16 23:50:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uarc_virt [2021-11-16 23:50:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uarc_virt [2021-11-16 23:50:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-11-16 23:50:48,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-11-16 23:50:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-16 23:50:48,458 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-16 23:50:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure ib_destroy_ah [2021-11-16 23:50:48,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_destroy_ah [2021-11-16 23:50:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-16 23:50:48,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-16 23:50:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_zero [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_zero [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_cleanup [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_cleanup [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_device [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_device [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ib_query_port [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_query_port [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_region [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_region [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure pci_pcie_cap [2021-11-16 23:50:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_pcie_cap [2021-11-16 23:50:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CLOSE_IB [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CLOSE_IB [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure clear_page [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_page [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_alloc [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_alloc [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_init_one [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_init_one [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_create_eq [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_create_eq [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm_table [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm_table [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_catas_cleanup [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_catas_cleanup [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure hw_index_to_key [2021-11-16 23:50:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_index_to_key [2021-11-16 23:50:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64_raw [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64_raw [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_use_polling [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_use_polling [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm_table [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm_table [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt_range [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt_range [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 23:50:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-16 23:50:48,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_free [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_free [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_cleanup [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_cleanup [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_eq_req_not [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_eq_req_not [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_cleanup [2021-11-16 23:50:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_cleanup [2021-11-16 23:50:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_eq_table [2021-11-16 23:50:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_eq_table [2021-11-16 23:50:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-16 23:50:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-16 23:50:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 23:50:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 23:50:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 23:50:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 23:50:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-16 23:50:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-16 23:50:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-16 23:50:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-16 23:50:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-16 23:50:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_av_table [2021-11-16 23:50:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_av_table [2021-11-16 23:50:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_icm [2021-11-16 23:50:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_icm [2021-11-16 23:50:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_alloc_mtt [2021-11-16 23:50:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_alloc_mtt [2021-11-16 23:50:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-16 23:50:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-16 23:50:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 23:50:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 23:50:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 23:50:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 23:50:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_is_memfree [2021-11-16 23:50:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_is_memfree [2021-11-16 23:50:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_eq_req_not [2021-11-16 23:50:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_eq_req_not [2021-11-16 23:50:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM [2021-11-16 23:50:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM [2021-11-16 23:50:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-16 23:50:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-16 23:50:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure set_eqe_hw [2021-11-16 23:50:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure set_eqe_hw [2021-11-16 23:50:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 23:50:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 23:50:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-16 23:50:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-16 23:50:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 23:50:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-16 23:50:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-16 23:50:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_update_rate [2021-11-16 23:50:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_update_rate [2021-11-16 23:50:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 23:50:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_ICM [2021-11-16 23:50:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_ICM [2021-11-16 23:50:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_init [2021-11-16 23:50:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_init [2021-11-16 23:50:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-16 23:50:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-16 23:50:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-16 23:50:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-16 23:50:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_uar_table [2021-11-16 23:50:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_uar_table [2021-11-16 23:50:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-16 23:50:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-16 23:50:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-16 23:50:48,474 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-16 23:50:48,474 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_addr [2021-11-16 23:50:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_addr [2021-11-16 23:50:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2021-11-16 23:50:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2021-11-16 23:50:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-16 23:50:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-16 23:50:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-16 23:50:48,475 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-16 23:50:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-16 23:50:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-16 23:50:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mtt [2021-11-16 23:50:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mtt [2021-11-16 23:50:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure go_bit [2021-11-16 23:50:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure go_bit [2021-11-16 23:50:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 23:50:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free [2021-11-16 23:50:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free [2021-11-16 23:50:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_zero_bit [2021-11-16 23:50:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_zero_bit [2021-11-16 23:50:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-16 23:50:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-16 23:50:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 23:50:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 23:50:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mthca_device_mutex [2021-11-16 23:50:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mthca_device_mutex [2021-11-16 23:50:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SW2HW_MPT [2021-11-16 23:50:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SW2HW_MPT [2021-11-16 23:50:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure pcie_capability_write_word [2021-11-16 23:50:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pcie_capability_write_word [2021-11-16 23:50:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_irqs [2021-11-16 23:50:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_irqs [2021-11-16 23:50:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mr_table [2021-11-16 23:50:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mr_table [2021-11-16 23:50:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure __be64_to_cpup [2021-11-16 23:50:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __be64_to_cpup [2021-11-16 23:50:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_GET [2021-11-16 23:50:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-16 23:50:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-16 23:50:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-16 23:50:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-16 23:50:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_notrans [2021-11-16 23:50:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_notrans [2021-11-16 23:50:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-11-16 23:50:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-11-16 23:50:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-16 23:50:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-16 23:50:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_put [2021-11-16 23:50:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_put [2021-11-16 23:50:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc [2021-11-16 23:50:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc [2021-11-16 23:50:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write64 [2021-11-16 23:50:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write64 [2021-11-16 23:50:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-16 23:50:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-16 23:50:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_imm [2021-11-16 23:50:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_imm [2021-11-16 23:50:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_mcg_table [2021-11-16 23:50:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_mcg_table [2021-11-16 23:50:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_qp_table [2021-11-16 23:50:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_qp_table [2021-11-16 23:50:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-16 23:50:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-16 23:50:48,483 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_device [2021-11-16 23:50:48,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_device [2021-11-16 23:50:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure ib_unregister_mad_agent [2021-11-16 23:50:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_unregister_mad_agent [2021-11-16 23:50:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-16 23:50:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-16 23:50:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-16 23:50:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-16 23:50:48,484 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_INIT_HCA [2021-11-16 23:50:48,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_INIT_HCA [2021-11-16 23:50:48,485 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_hw_index_to_key [2021-11-16 23:50:48,485 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_hw_index_to_key [2021-11-16 23:50:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 23:50:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 23:50:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-16 23:50:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-16 23:50:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-16 23:50:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-16 23:50:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_cq_table [2021-11-16 23:50:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_cq_table [2021-11-16 23:50:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_cleanup [2021-11-16 23:50:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_cleanup [2021-11-16 23:50:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-16 23:50:48,490 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-16 23:50:48,490 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_close_hca [2021-11-16 23:50:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_close_hca [2021-11-16 23:50:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAP_EQ [2021-11-16 23:50:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAP_EQ [2021-11-16 23:50:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure down [2021-11-16 23:50:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure down [2021-11-16 23:50:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-16 23:50:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-16 23:50:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_MAD_IFC [2021-11-16 23:50:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_MAD_IFC [2021-11-16 23:50:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_cmd [2021-11-16 23:50:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_cmd [2021-11-16 23:50:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-16 23:50:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-16 23:50:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 23:50:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2021-11-16 23:50:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mthca_icm_table [2021-11-16 23:50:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_eq [2021-11-16 23:50:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_eq [2021-11-16 23:50:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_alloc [2021-11-16 23:50:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_alloc [2021-11-16 23:50:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mailbox [2021-11-16 23:50:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mailbox [2021-11-16 23:50:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-16 23:50:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-16 23:50:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-16 23:50:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_DISABLE_LAM [2021-11-16 23:50:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_DISABLE_LAM [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-16 23:50:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure dma_sync_single_for_cpu [2021-11-16 23:50:48,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_sync_single_for_cpu [2021-11-16 23:50:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_uar_alloc [2021-11-16 23:50:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_uar_alloc [2021-11-16 23:50:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure bitmap_empty [2021-11-16 23:50:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure bitmap_empty [2021-11-16 23:50:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mthca_device_mutex [2021-11-16 23:50:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mthca_device_mutex [2021-11-16 23:50:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_setup_hca [2021-11-16 23:50:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_setup_hca [2021-11-16 23:50:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-16 23:50:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-16 23:50:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc [2021-11-16 23:50:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc [2021-11-16 23:50:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_CONF_SPECIAL_QP [2021-11-16 23:50:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_CONF_SPECIAL_QP [2021-11-16 23:50:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_map_reg [2021-11-16 23:50:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_map_reg [2021-11-16 23:50:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_check_profile_val [2021-11-16 23:50:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_check_profile_val [2021-11-16 23:50:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_sg [2021-11-16 23:50:48,496 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_sg [2021-11-16 23:50:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_FA [2021-11-16 23:50:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_FA [2021-11-16 23:50:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_buddy_free [2021-11-16 23:50:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_buddy_free [2021-11-16 23:50:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-16 23:50:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-16 23:50:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_write_mtt_size [2021-11-16 23:50:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_write_mtt_size [2021-11-16 23:50:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure dma_get_cache_alignment [2021-11-16 23:50:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_get_cache_alignment [2021-11-16 23:50:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_free_mr [2021-11-16 23:50:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_free_mr [2021-11-16 23:50:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mailbox [2021-11-16 23:50:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mailbox [2021-11-16 23:50:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-16 23:50:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-16 23:50:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-16 23:50:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-16 23:50:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_dev_lim [2021-11-16 23:50:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_dev_lim [2021-11-16 23:50:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2021-11-16 23:50:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2021-11-16 23:50:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure tavor_hw_index_to_key [2021-11-16 23:50:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure tavor_hw_index_to_key [2021-11-16 23:50:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_QUERY_FW [2021-11-16 23:50:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_QUERY_FW [2021-11-16 23:50:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure writeq [2021-11-16 23:50:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure writeq [2021-11-16 23:50:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-16 23:50:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-16 23:50:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_SYS_DIS [2021-11-16 23:50:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_SYS_DIS [2021-11-16 23:50:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_init [2021-11-16 23:50:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_init [2021-11-16 23:50:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_box [2021-11-16 23:50:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_box [2021-11-16 23:50:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-16 23:50:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-16 23:50:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-16 23:50:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-16 23:50:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-16 23:50:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_make_profile [2021-11-16 23:50:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_make_profile [2021-11-16 23:50:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure fls64 [2021-11-16 23:50:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure fls64 [2021-11-16 23:50:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-16 23:50:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-16 23:50:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unregister_device [2021-11-16 23:50:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unregister_device [2021-11-16 23:50:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure arbel_key_to_hw_index [2021-11-16 23:50:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure arbel_key_to_hw_index [2021-11-16 23:50:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-11-16 23:50:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-11-16 23:50:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-16 23:50:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-16 23:50:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure up [2021-11-16 23:50:48,502 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2021-11-16 23:50:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-16 23:50:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-16 23:50:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-16 23:50:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-16 23:50:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 23:50:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_find [2021-11-16 23:50:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_find [2021-11-16 23:50:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_icm [2021-11-16 23:50:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_icm [2021-11-16 23:50:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_icm_size [2021-11-16 23:50:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_icm_size [2021-11-16 23:50:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-16 23:50:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-16 23:50:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-16 23:50:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-16 23:50:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_srq_table [2021-11-16 23:50:48,506 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_srq_table [2021-11-16 23:50:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_poll [2021-11-16 23:50:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_poll [2021-11-16 23:50:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_UNMAP_ICM_AUX [2021-11-16 23:50:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_UNMAP_ICM_AUX [2021-11-16 23:50:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-11-16 23:50:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-11-16 23:50:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_wait [2021-11-16 23:50:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_wait [2021-11-16 23:50:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_mr_alloc_phys [2021-11-16 23:50:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_mr_alloc_phys [2021-11-16 23:50:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_sg [2021-11-16 23:50:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_sg [2021-11-16 23:50:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-16 23:50:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-16 23:50:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure get_eqe [2021-11-16 23:50:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eqe [2021-11-16 23:50:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure async_mask [2021-11-16 23:50:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure async_mask [2021-11-16 23:50:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_array_init [2021-11-16 23:50:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_array_init [2021-11-16 23:50:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_pd_free [2021-11-16 23:50:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_pd_free [2021-11-16 23:50:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd [2021-11-16 23:50:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd [2021-11-16 23:50:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-16 23:50:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-16 23:50:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_table_get [2021-11-16 23:50:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_table_get [2021-11-16 23:50:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure __mthca_remove_one [2021-11-16 23:50:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __mthca_remove_one [2021-11-16 23:50:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-16 23:50:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-16 23:50:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cleanup_pd_table [2021-11-16 23:50:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cleanup_pd_table [2021-11-16 23:50:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure init_query_mad [2021-11-16 23:50:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure init_query_mad [2021-11-16 23:50:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-16 23:50:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-16 23:50:48,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2021-11-16 23:50:48,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mthca_icm_table [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_cmd_post [2021-11-16 23:50:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_cmd_post [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-16 23:50:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-16 23:50:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_unmap_eq_regs [2021-11-16 23:50:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_unmap_eq_regs [2021-11-16 23:50:48,511 INFO L130 BoogieDeclarations]: Found specification of procedure __buggy_use_of_MTHCA_PUT [2021-11-16 23:50:48,512 INFO L130 BoogieDeclarations]: Found specification of procedure mthca_alloc_mtt [2021-11-16 23:50:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure mthca_alloc_mtt [2021-11-16 23:50:49,507 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 23:50:49,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 23:51:18,172 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 23:51:18,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 23:51:18,192 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 23:51:18,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:18 BoogieIcfgContainer [2021-11-16 23:51:18,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 23:51:18,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 23:51:18,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 23:51:18,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 23:51:18,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:50:37" (1/3) ... [2021-11-16 23:51:18,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402562d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:18, skipping insertion in model container [2021-11-16 23:51:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:50:47" (2/3) ... [2021-11-16 23:51:18,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402562d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:18, skipping insertion in model container [2021-11-16 23:51:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:18" (3/3) ... [2021-11-16 23:51:18,204 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--infiniband--hw--mthca--ib_mthca.ko-main.cil.out.i [2021-11-16 23:51:18,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 23:51:18,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 23:51:18,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 23:51:18,250 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=PETRI_NET, 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 [2021-11-16 23:51:18,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 23:51:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 4985 states, 3560 states have (on average 1.3747191011235955) internal successors, (4894), 3629 states have internal predecessors, (4894), 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) [2021-11-16 23:51:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-16 23:51:18,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:18,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:51:18,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -717393883, now seen corresponding path program 1 times [2021-11-16 23:51:18,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:18,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313055601] [2021-11-16 23:51:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:18,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:18,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313055601] [2021-11-16 23:51:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313055601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 23:51:18,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838180263] [2021-11-16 23:51:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:18,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 23:51:18,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 23:51:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 23:51:18,768 INFO L87 Difference]: Start difference. First operand has 4985 states, 3560 states have (on average 1.3747191011235955) internal successors, (4894), 3629 states have internal predecessors, (4894), 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 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-16 23:51:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:19,167 INFO L93 Difference]: Finished difference Result 10089 states and 15078 transitions. [2021-11-16 23:51:19,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 23:51:19,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 18 [2021-11-16 23:51:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:19,212 INFO L225 Difference]: With dead ends: 10089 [2021-11-16 23:51:19,213 INFO L226 Difference]: Without dead ends: 5081 [2021-11-16 23:51:19,246 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 [2021-11-16 23:51:19,249 INFO L933 BasicCegarLoop]: 7283 mSDtfsCounter, 198 mSDsluCounter, 7256 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 14539 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:19,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 14539 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 23:51:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5081 states. [2021-11-16 23:51:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5081 to 5051. [2021-11-16 23:51:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 3610 states have (on average 1.3731301939058171) internal successors, (4957), 3678 states have internal predecessors, (4957), 1225 states have call successors, (1225), 216 states have call predecessors, (1225), 215 states have return successors, (1206), 1205 states have call predecessors, (1206), 1206 states have call successors, (1206) [2021-11-16 23:51:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 7388 transitions. [2021-11-16 23:51:19,497 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 7388 transitions. Word has length 18 [2021-11-16 23:51:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:19,498 INFO L470 AbstractCegarLoop]: Abstraction has 5051 states and 7388 transitions. [2021-11-16 23:51:19,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-16 23:51:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 7388 transitions. [2021-11-16 23:51:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-16 23:51:19,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:19,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:51:19,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 23:51:19,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1416412498, now seen corresponding path program 1 times [2021-11-16 23:51:19,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:19,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643058031] [2021-11-16 23:51:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:19,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:51:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 23:51:19,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:19,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643058031] [2021-11-16 23:51:19,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643058031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:19,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:19,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 23:51:19,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794400031] [2021-11-16 23:51:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:19,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 23:51:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 23:51:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 23:51:19,923 INFO L87 Difference]: Start difference. First operand 5051 states and 7388 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-16 23:51:21,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:22,346 INFO L93 Difference]: Finished difference Result 15033 states and 21994 transitions. [2021-11-16 23:51:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 23:51:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 21 [2021-11-16 23:51:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:22,405 INFO L225 Difference]: With dead ends: 15033 [2021-11-16 23:51:22,405 INFO L226 Difference]: Without dead ends: 9985 [2021-11-16 23:51:22,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 23:51:22,433 INFO L933 BasicCegarLoop]: 14253 mSDtfsCounter, 7171 mSDsluCounter, 7166 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7171 SdHoareTripleChecker+Valid, 21419 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:22,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7171 Valid, 21419 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 23:51:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2021-11-16 23:51:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9971. [2021-11-16 23:51:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9971 states, 7144 states have (on average 1.3722004479283314) internal successors, (9803), 7260 states have internal predecessors, (9803), 2403 states have call successors, (2403), 424 states have call predecessors, (2403), 423 states have return successors, (2384), 2384 states have call predecessors, (2384), 2384 states have call successors, (2384) [2021-11-16 23:51:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9971 states to 9971 states and 14590 transitions. [2021-11-16 23:51:22,769 INFO L78 Accepts]: Start accepts. Automaton has 9971 states and 14590 transitions. Word has length 21 [2021-11-16 23:51:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 9971 states and 14590 transitions. [2021-11-16 23:51:22,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-16 23:51:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9971 states and 14590 transitions. [2021-11-16 23:51:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 23:51:22,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:22,778 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-16 23:51:22,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 23:51:22,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1846771227, now seen corresponding path program 1 times [2021-11-16 23:51:22,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:22,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561140278] [2021-11-16 23:51:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:51:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:51:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:51:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:51:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:51:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:51:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:51:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:51:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:51:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:51:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:51:23,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:51:23,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561140278] [2021-11-16 23:51:23,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561140278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:51:23,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:51:23,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:51:23,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669036904] [2021-11-16 23:51:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:51:23,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:51:23,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:51:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:51:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:51:23,326 INFO L87 Difference]: Start difference. First operand 9971 states and 14590 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 23:51:25,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:28,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:30,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:33,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:35,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:39,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:42,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:45,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:48,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:51:51,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:58,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:51:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:51:59,080 INFO L93 Difference]: Finished difference Result 22042 states and 32224 transitions. [2021-11-16 23:51:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:51:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2021-11-16 23:51:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:51:59,144 INFO L225 Difference]: With dead ends: 22042 [2021-11-16 23:51:59,144 INFO L226 Difference]: Without dead ends: 12074 [2021-11-16 23:51:59,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:51:59,184 INFO L933 BasicCegarLoop]: 6957 mSDtfsCounter, 7676 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 2462 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8606 SdHoareTripleChecker+Valid, 10500 SdHoareTripleChecker+Invalid, 5622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2462 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2021-11-16 23:51:59,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8606 Valid, 10500 Invalid, 5622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2462 Valid, 3150 Invalid, 10 Unknown, 0 Unchecked, 34.9s Time] [2021-11-16 23:51:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12074 states. [2021-11-16 23:51:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12074 to 11072. [2021-11-16 23:51:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11072 states, 7860 states have (on average 1.355089058524173) internal successors, (10651), 7990 states have internal predecessors, (10651), 2667 states have call successors, (2667), 545 states have call predecessors, (2667), 544 states have return successors, (2648), 2648 states have call predecessors, (2648), 2648 states have call successors, (2648) [2021-11-16 23:51:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11072 states to 11072 states and 15966 transitions. [2021-11-16 23:51:59,666 INFO L78 Accepts]: Start accepts. Automaton has 11072 states and 15966 transitions. Word has length 91 [2021-11-16 23:51:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:51:59,668 INFO L470 AbstractCegarLoop]: Abstraction has 11072 states and 15966 transitions. [2021-11-16 23:51:59,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 23:51:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 11072 states and 15966 transitions. [2021-11-16 23:51:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 23:51:59,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:51:59,671 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-16 23:51:59,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 23:51:59,672 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:51:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:51:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1627916509, now seen corresponding path program 1 times [2021-11-16 23:51:59,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:51:59,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594513932] [2021-11-16 23:51:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:51:59,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:51:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:51:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:51:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:51:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:51:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:51:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:51:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:51:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:51:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:52:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:52:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:52:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:52:00,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:52:00,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594513932] [2021-11-16 23:52:00,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594513932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:52:00,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:52:00,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 23:52:00,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947624934] [2021-11-16 23:52:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:52:00,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 23:52:00,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:52:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 23:52:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:52:00,047 INFO L87 Difference]: Start difference. First operand 11072 states and 15966 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:52:02,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:05,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:07,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:10,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:12,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:17,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:22,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:24,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:26,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:28,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:52:31,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:37,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:39,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:52:41,296 INFO L93 Difference]: Finished difference Result 23500 states and 34192 transitions. [2021-11-16 23:52:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 23:52:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 3 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 91 [2021-11-16 23:52:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:52:41,348 INFO L225 Difference]: With dead ends: 23500 [2021-11-16 23:52:41,349 INFO L226 Difference]: Without dead ends: 12431 [2021-11-16 23:52:41,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 23:52:41,385 INFO L933 BasicCegarLoop]: 7055 mSDtfsCounter, 1412 mSDsluCounter, 16059 mSDsCounter, 0 mSdLazyCounter, 4903 mSolverCounterSat, 1339 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 23114 SdHoareTripleChecker+Invalid, 6253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 4903 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-11-16 23:52:41,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 23114 Invalid, 6253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1339 Valid, 4903 Invalid, 11 Unknown, 0 Unchecked, 40.6s Time] [2021-11-16 23:52:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12431 states. [2021-11-16 23:52:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12431 to 11076. [2021-11-16 23:52:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11076 states, 7864 states have (on average 1.354908443540183) internal successors, (10655), 7994 states have internal predecessors, (10655), 2667 states have call successors, (2667), 545 states have call predecessors, (2667), 544 states have return successors, (2648), 2648 states have call predecessors, (2648), 2648 states have call successors, (2648) [2021-11-16 23:52:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11076 states to 11076 states and 15970 transitions. [2021-11-16 23:52:41,811 INFO L78 Accepts]: Start accepts. Automaton has 11076 states and 15970 transitions. Word has length 91 [2021-11-16 23:52:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:52:41,812 INFO L470 AbstractCegarLoop]: Abstraction has 11076 states and 15970 transitions. [2021-11-16 23:52:41,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:52:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 11076 states and 15970 transitions. [2021-11-16 23:52:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 23:52:41,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:52:41,815 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-16 23:52:41,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 23:52:41,815 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:52:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:52:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1234889499, now seen corresponding path program 1 times [2021-11-16 23:52:41,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:52:41,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073741427] [2021-11-16 23:52:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:52:41,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:52:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:52:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:52:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:52:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:52:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:52:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:52:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:52:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:52:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:52:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:52:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:52:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:52:42,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:52:42,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073741427] [2021-11-16 23:52:42,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073741427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:52:42,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:52:42,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:52:42,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312554808] [2021-11-16 23:52:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:52:42,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:52:42,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:52:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:52:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:52:42,120 INFO L87 Difference]: Start difference. First operand 11076 states and 15970 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:52:44,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:47,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:49,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:51,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:54,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:52:57,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:00,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:03,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:53:05,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:12,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:53:13,092 INFO L93 Difference]: Finished difference Result 12230 states and 17796 transitions. [2021-11-16 23:53:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:53:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 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 91 [2021-11-16 23:53:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:53:13,138 INFO L225 Difference]: With dead ends: 12230 [2021-11-16 23:53:13,139 INFO L226 Difference]: Without dead ends: 12201 [2021-11-16 23:53:13,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:53:13,150 INFO L933 BasicCegarLoop]: 6865 mSDtfsCounter, 7338 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 2298 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8173 SdHoareTripleChecker+Valid, 10200 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2298 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2021-11-16 23:53:13,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8173 Valid, 10200 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2298 Valid, 2698 Invalid, 9 Unknown, 0 Unchecked, 30.4s Time] [2021-11-16 23:53:13,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2021-11-16 23:53:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 11230. [2021-11-16 23:53:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11230 states, 7972 states have (on average 1.3519819367787256) internal successors, (10778), 8104 states have internal predecessors, (10778), 2683 states have call successors, (2683), 575 states have call predecessors, (2683), 574 states have return successors, (2664), 2662 states have call predecessors, (2664), 2664 states have call successors, (2664) [2021-11-16 23:53:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 16125 transitions. [2021-11-16 23:53:13,619 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 16125 transitions. Word has length 91 [2021-11-16 23:53:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:53:13,619 INFO L470 AbstractCegarLoop]: Abstraction has 11230 states and 16125 transitions. [2021-11-16 23:53:13,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:53:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 16125 transitions. [2021-11-16 23:53:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 23:53:13,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:53:13,624 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-16 23:53:13,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 23:53:13,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:53:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:53:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1177631197, now seen corresponding path program 1 times [2021-11-16 23:53:13,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:53:13,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565602976] [2021-11-16 23:53:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:53:13,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:53:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:53:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:53:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:53:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:53:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:53:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:53:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:53:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:53:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:53:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:53:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:53:13,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:53:13,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565602976] [2021-11-16 23:53:13,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565602976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:53:13,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:53:13,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:53:13,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732548420] [2021-11-16 23:53:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:53:13,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:53:13,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:53:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:53:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:53:13,887 INFO L87 Difference]: Start difference. First operand 11230 states and 16125 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:53:15,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:19,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:21,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:24,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:28,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:29,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:32,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:35,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:53:36,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:42,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:45,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:53:45,658 INFO L93 Difference]: Finished difference Result 12176 states and 17717 transitions. [2021-11-16 23:53:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:53:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 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 91 [2021-11-16 23:53:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:53:45,693 INFO L225 Difference]: With dead ends: 12176 [2021-11-16 23:53:45,694 INFO L226 Difference]: Without dead ends: 12173 [2021-11-16 23:53:45,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:53:45,699 INFO L933 BasicCegarLoop]: 6824 mSDtfsCounter, 7306 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 2295 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8143 SdHoareTripleChecker+Valid, 10090 SdHoareTripleChecker+Invalid, 5000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2295 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2021-11-16 23:53:45,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8143 Valid, 10090 Invalid, 5000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2295 Valid, 2697 Invalid, 8 Unknown, 0 Unchecked, 31.3s Time] [2021-11-16 23:53:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12173 states. [2021-11-16 23:53:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12173 to 11229. [2021-11-16 23:53:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 7972 states have (on average 1.3518564977420973) internal successors, (10777), 8103 states have internal predecessors, (10777), 2682 states have call successors, (2682), 575 states have call predecessors, (2682), 574 states have return successors, (2664), 2662 states have call predecessors, (2664), 2664 states have call successors, (2664) [2021-11-16 23:53:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 16123 transitions. [2021-11-16 23:53:46,138 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 16123 transitions. Word has length 91 [2021-11-16 23:53:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:53:46,139 INFO L470 AbstractCegarLoop]: Abstraction has 11229 states and 16123 transitions. [2021-11-16 23:53:46,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:53:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 16123 transitions. [2021-11-16 23:53:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-16 23:53:46,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:53:46,140 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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] [2021-11-16 23:53:46,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 23:53:46,141 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:53:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:53:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2146053021, now seen corresponding path program 1 times [2021-11-16 23:53:46,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:53:46,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666070258] [2021-11-16 23:53:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:53:46,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:53:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:53:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:53:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:53:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:53:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:53:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:53:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:53:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:53:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:53:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:53:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:53:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:53:46,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:53:46,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666070258] [2021-11-16 23:53:46,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666070258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:53:46,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:53:46,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:53:46,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394394743] [2021-11-16 23:53:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:53:46,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:53:46,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:53:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:53:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:53:46,451 INFO L87 Difference]: Start difference. First operand 11229 states and 16123 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:53:48,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:51,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:53,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:53:58,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:02,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:04,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:08,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:54:10,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:16,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:54:16,798 INFO L93 Difference]: Finished difference Result 12239 states and 17812 transitions. [2021-11-16 23:54:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:54:16,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 3 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 92 [2021-11-16 23:54:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:54:16,845 INFO L225 Difference]: With dead ends: 12239 [2021-11-16 23:54:16,846 INFO L226 Difference]: Without dead ends: 12236 [2021-11-16 23:54:16,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:54:16,852 INFO L933 BasicCegarLoop]: 6829 mSDtfsCounter, 7399 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 2353 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8230 SdHoareTripleChecker+Valid, 9998 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2353 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2021-11-16 23:54:16,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8230 Valid, 9998 Invalid, 4969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2353 Valid, 2607 Invalid, 9 Unknown, 0 Unchecked, 29.9s Time] [2021-11-16 23:54:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2021-11-16 23:54:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 11228. [2021-11-16 23:54:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11228 states, 7972 states have (on average 1.3517310587054692) internal successors, (10776), 8102 states have internal predecessors, (10776), 2681 states have call successors, (2681), 575 states have call predecessors, (2681), 574 states have return successors, (2664), 2662 states have call predecessors, (2664), 2664 states have call successors, (2664) [2021-11-16 23:54:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11228 states to 11228 states and 16121 transitions. [2021-11-16 23:54:17,257 INFO L78 Accepts]: Start accepts. Automaton has 11228 states and 16121 transitions. Word has length 92 [2021-11-16 23:54:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:54:17,258 INFO L470 AbstractCegarLoop]: Abstraction has 11228 states and 16121 transitions. [2021-11-16 23:54:17,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:54:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 11228 states and 16121 transitions. [2021-11-16 23:54:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-16 23:54:17,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:54:17,259 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1] [2021-11-16 23:54:17,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 23:54:17,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:54:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:54:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2101053542, now seen corresponding path program 1 times [2021-11-16 23:54:17,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:54:17,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145390641] [2021-11-16 23:54:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:54:17,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:54:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:54:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:54:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:54:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:54:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:54:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:54:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:54:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:54:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:54:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:54:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:54:17,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:54:17,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145390641] [2021-11-16 23:54:17,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145390641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:54:17,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:54:17,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:54:17,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473091087] [2021-11-16 23:54:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:54:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:54:17,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:54:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:54:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:54:17,529 INFO L87 Difference]: Start difference. First operand 11228 states and 16121 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:54:19,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:21,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:24,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:26,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:30,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:35,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:38,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:54:40,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:54:45,552 INFO L93 Difference]: Finished difference Result 12348 states and 17919 transitions. [2021-11-16 23:54:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:54:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 3 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 93 [2021-11-16 23:54:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:54:45,595 INFO L225 Difference]: With dead ends: 12348 [2021-11-16 23:54:45,595 INFO L226 Difference]: Without dead ends: 12344 [2021-11-16 23:54:45,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:54:45,602 INFO L933 BasicCegarLoop]: 6869 mSDtfsCounter, 7330 mSDsluCounter, 3208 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 2296 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8143 SdHoareTripleChecker+Valid, 10077 SdHoareTripleChecker+Invalid, 5023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2296 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:54:45,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8143 Valid, 10077 Invalid, 5023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2296 Valid, 2719 Invalid, 8 Unknown, 0 Unchecked, 27.5s Time] [2021-11-16 23:54:45,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2021-11-16 23:54:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 11334. [2021-11-16 23:54:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11334 states, 8052 states have (on average 1.3500993541977149) internal successors, (10871), 8180 states have internal predecessors, (10871), 2683 states have call successors, (2683), 599 states have call predecessors, (2683), 598 states have return successors, (2668), 2666 states have call predecessors, (2668), 2668 states have call successors, (2668) [2021-11-16 23:54:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 16222 transitions. [2021-11-16 23:54:45,992 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 16222 transitions. Word has length 93 [2021-11-16 23:54:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:54:45,993 INFO L470 AbstractCegarLoop]: Abstraction has 11334 states and 16222 transitions. [2021-11-16 23:54:45,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:54:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 16222 transitions. [2021-11-16 23:54:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-16 23:54:45,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:54:45,994 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1] [2021-11-16 23:54:45,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-16 23:54:45,994 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:54:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:54:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 706074560, now seen corresponding path program 1 times [2021-11-16 23:54:45,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:54:45,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33573396] [2021-11-16 23:54:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:54:45,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:54:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:54:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:54:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:54:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:54:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:54:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:54:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:54:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:54:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:54:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:54:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:54:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:54:46,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:54:46,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33573396] [2021-11-16 23:54:46,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33573396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:54:46,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:54:46,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:54:46,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59475563] [2021-11-16 23:54:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:54:46,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:54:46,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:54:46,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:54:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:54:46,285 INFO L87 Difference]: Start difference. First operand 11334 states and 16222 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:54:48,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:50,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:53,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:55,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:54:59,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:04,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:05,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:08,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:55:10,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:16,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:19,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:55:19,700 INFO L93 Difference]: Finished difference Result 12280 states and 17814 transitions. [2021-11-16 23:55:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:55:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 3 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 94 [2021-11-16 23:55:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:55:19,735 INFO L225 Difference]: With dead ends: 12280 [2021-11-16 23:55:19,735 INFO L226 Difference]: Without dead ends: 12277 [2021-11-16 23:55:19,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:55:19,741 INFO L933 BasicCegarLoop]: 6812 mSDtfsCounter, 7297 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 2295 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8131 SdHoareTripleChecker+Valid, 10079 SdHoareTripleChecker+Invalid, 4993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2295 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2021-11-16 23:55:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8131 Valid, 10079 Invalid, 4993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2295 Valid, 2688 Invalid, 10 Unknown, 0 Unchecked, 32.8s Time] [2021-11-16 23:55:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12277 states. [2021-11-16 23:55:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12277 to 11333. [2021-11-16 23:55:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11333 states, 8052 states have (on average 1.3499751614505713) internal successors, (10870), 8179 states have internal predecessors, (10870), 2682 states have call successors, (2682), 599 states have call predecessors, (2682), 598 states have return successors, (2668), 2666 states have call predecessors, (2668), 2668 states have call successors, (2668) [2021-11-16 23:55:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11333 states to 11333 states and 16220 transitions. [2021-11-16 23:55:20,195 INFO L78 Accepts]: Start accepts. Automaton has 11333 states and 16220 transitions. Word has length 94 [2021-11-16 23:55:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:55:20,195 INFO L470 AbstractCegarLoop]: Abstraction has 11333 states and 16220 transitions. [2021-11-16 23:55:20,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:55:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11333 states and 16220 transitions. [2021-11-16 23:55:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-16 23:55:20,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:55:20,196 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1] [2021-11-16 23:55:20,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-16 23:55:20,196 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:55:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:55:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash 411403945, now seen corresponding path program 1 times [2021-11-16 23:55:20,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:55:20,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557956744] [2021-11-16 23:55:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:55:20,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:55:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:55:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:55:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:55:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:55:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:55:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:55:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:55:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:55:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:55:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:55:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:55:20,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:55:20,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557956744] [2021-11-16 23:55:20,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557956744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:55:20,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:55:20,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:55:20,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829994117] [2021-11-16 23:55:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:55:20,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:55:20,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:55:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:55:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:55:20,508 INFO L87 Difference]: Start difference. First operand 11333 states and 16220 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:55:22,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:24,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:27,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:30,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:32,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:35,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:39,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:43,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:46,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:49,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:55:51,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:55:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:55:56,696 INFO L93 Difference]: Finished difference Result 12349 states and 17898 transitions. [2021-11-16 23:55:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:55:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 3 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 95 [2021-11-16 23:55:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:55:56,729 INFO L225 Difference]: With dead ends: 12349 [2021-11-16 23:55:56,730 INFO L226 Difference]: Without dead ends: 12345 [2021-11-16 23:55:56,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:55:56,736 INFO L933 BasicCegarLoop]: 6842 mSDtfsCounter, 1429 mSDsluCounter, 9146 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 1342 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 15988 SdHoareTripleChecker+Invalid, 5051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1342 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2021-11-16 23:55:56,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 15988 Invalid, 5051 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1342 Valid, 3698 Invalid, 11 Unknown, 0 Unchecked, 35.5s Time] [2021-11-16 23:55:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12345 states. [2021-11-16 23:55:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12345 to 11349. [2021-11-16 23:55:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11349 states, 8064 states have (on average 1.3490823412698412) internal successors, (10879), 8189 states have internal predecessors, (10879), 2681 states have call successors, (2681), 604 states have call predecessors, (2681), 603 states have return successors, (2669), 2667 states have call predecessors, (2669), 2669 states have call successors, (2669) [2021-11-16 23:55:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11349 states to 11349 states and 16229 transitions. [2021-11-16 23:55:57,286 INFO L78 Accepts]: Start accepts. Automaton has 11349 states and 16229 transitions. Word has length 95 [2021-11-16 23:55:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:55:57,286 INFO L470 AbstractCegarLoop]: Abstraction has 11349 states and 16229 transitions. [2021-11-16 23:55:57,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:55:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11349 states and 16229 transitions. [2021-11-16 23:55:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-16 23:55:57,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:55:57,287 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1] [2021-11-16 23:55:57,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-16 23:55:57,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:55:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:55:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -133445661, now seen corresponding path program 1 times [2021-11-16 23:55:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:55:57,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732691261] [2021-11-16 23:55:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:55:57,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:55:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:55:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:55:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:55:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:55:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:55:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:55:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:55:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:55:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:55:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:55:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:55:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:55:57,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:55:57,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732691261] [2021-11-16 23:55:57,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732691261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:55:57,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:55:57,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:55:57,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850489989] [2021-11-16 23:55:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:55:57,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:55:57,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:55:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:55:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:55:57,857 INFO L87 Difference]: Start difference. First operand 11349 states and 16229 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:55:59,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:01,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:04,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:07,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:09,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:13,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:18,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:22,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:56:24,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:30,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:33,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:56:33,201 INFO L93 Difference]: Finished difference Result 12284 states and 17798 transitions. [2021-11-16 23:56:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:56:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 3 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 96 [2021-11-16 23:56:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:56:33,262 INFO L225 Difference]: With dead ends: 12284 [2021-11-16 23:56:33,263 INFO L226 Difference]: Without dead ends: 12281 [2021-11-16 23:56:33,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:56:33,268 INFO L933 BasicCegarLoop]: 6925 mSDtfsCounter, 7511 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 2393 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8445 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 5595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2393 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2021-11-16 23:56:33,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8445 Valid, 10550 Invalid, 5595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2393 Valid, 3191 Invalid, 11 Unknown, 0 Unchecked, 34.7s Time] [2021-11-16 23:56:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2021-11-16 23:56:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11348. [2021-11-16 23:56:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11348 states, 8064 states have (on average 1.3489583333333333) internal successors, (10878), 8188 states have internal predecessors, (10878), 2680 states have call successors, (2680), 604 states have call predecessors, (2680), 603 states have return successors, (2669), 2667 states have call predecessors, (2669), 2669 states have call successors, (2669) [2021-11-16 23:56:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 16227 transitions. [2021-11-16 23:56:33,643 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 16227 transitions. Word has length 96 [2021-11-16 23:56:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:56:33,644 INFO L470 AbstractCegarLoop]: Abstraction has 11348 states and 16227 transitions. [2021-11-16 23:56:33,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:56:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 16227 transitions. [2021-11-16 23:56:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-16 23:56:33,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:56:33,645 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1] [2021-11-16 23:56:33,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-16 23:56:33,645 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:56:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:56:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 156090604, now seen corresponding path program 1 times [2021-11-16 23:56:33,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:56:33,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485803628] [2021-11-16 23:56:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:56:33,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:56:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:56:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:56:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:56:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:56:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:56:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:56:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:56:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:56:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:56:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:56:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:56:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:56:33,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:56:33,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485803628] [2021-11-16 23:56:33,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485803628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:56:33,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:56:33,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:56:33,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347079218] [2021-11-16 23:56:33,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:56:33,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:56:33,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:56:33,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:56:33,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:56:33,923 INFO L87 Difference]: Start difference. First operand 11348 states and 16227 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:56:35,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:38,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:40,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:43,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:47,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:52,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:54,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:56:56,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:56:58,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:57:03,644 INFO L93 Difference]: Finished difference Result 12358 states and 17916 transitions. [2021-11-16 23:57:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:57:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 3 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 97 [2021-11-16 23:57:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:57:03,684 INFO L225 Difference]: With dead ends: 12358 [2021-11-16 23:57:03,684 INFO L226 Difference]: Without dead ends: 12355 [2021-11-16 23:57:03,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:57:03,690 INFO L933 BasicCegarLoop]: 6819 mSDtfsCounter, 7379 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 2343 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8209 SdHoareTripleChecker+Valid, 9984 SdHoareTripleChecker+Invalid, 4960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2343 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2021-11-16 23:57:03,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8209 Valid, 9984 Invalid, 4960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2343 Valid, 2609 Invalid, 8 Unknown, 0 Unchecked, 29.1s Time] [2021-11-16 23:57:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12355 states. [2021-11-16 23:57:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12355 to 11347. [2021-11-16 23:57:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11347 states, 8064 states have (on average 1.3488343253968254) internal successors, (10877), 8187 states have internal predecessors, (10877), 2679 states have call successors, (2679), 604 states have call predecessors, (2679), 603 states have return successors, (2669), 2667 states have call predecessors, (2669), 2669 states have call successors, (2669) [2021-11-16 23:57:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 16225 transitions. [2021-11-16 23:57:04,161 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 16225 transitions. Word has length 97 [2021-11-16 23:57:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:57:04,161 INFO L470 AbstractCegarLoop]: Abstraction has 11347 states and 16225 transitions. [2021-11-16 23:57:04,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:57:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 16225 transitions. [2021-11-16 23:57:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-16 23:57:04,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:57:04,163 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1] [2021-11-16 23:57:04,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-16 23:57:04,163 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:57:04,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:57:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash 541785094, now seen corresponding path program 1 times [2021-11-16 23:57:04,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:57:04,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304460053] [2021-11-16 23:57:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:57:04,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:57:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:57:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:57:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:57:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:57:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:57:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:57:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:57:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:57:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:57:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:57:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:57:04,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:57:04,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304460053] [2021-11-16 23:57:04,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304460053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:57:04,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:57:04,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:57:04,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467557407] [2021-11-16 23:57:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:57:04,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:57:04,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:57:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:57:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:57:04,430 INFO L87 Difference]: Start difference. First operand 11347 states and 16225 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:57:06,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:08,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:11,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:13,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:17,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:21,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:25,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:57:27,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:57:32,710 INFO L93 Difference]: Finished difference Result 12357 states and 17914 transitions. [2021-11-16 23:57:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:57:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 3 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 98 [2021-11-16 23:57:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:57:32,739 INFO L225 Difference]: With dead ends: 12357 [2021-11-16 23:57:32,739 INFO L226 Difference]: Without dead ends: 12354 [2021-11-16 23:57:32,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:57:32,744 INFO L933 BasicCegarLoop]: 6795 mSDtfsCounter, 7390 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 2351 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8222 SdHoareTripleChecker+Valid, 9957 SdHoareTripleChecker+Invalid, 4965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2351 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2021-11-16 23:57:32,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8222 Valid, 9957 Invalid, 4965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2351 Valid, 2606 Invalid, 8 Unknown, 0 Unchecked, 27.7s Time] [2021-11-16 23:57:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2021-11-16 23:57:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 11346. [2021-11-16 23:57:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11346 states, 8064 states have (on average 1.3487103174603174) internal successors, (10876), 8186 states have internal predecessors, (10876), 2678 states have call successors, (2678), 604 states have call predecessors, (2678), 603 states have return successors, (2669), 2667 states have call predecessors, (2669), 2669 states have call successors, (2669) [2021-11-16 23:57:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11346 states to 11346 states and 16223 transitions. [2021-11-16 23:57:33,147 INFO L78 Accepts]: Start accepts. Automaton has 11346 states and 16223 transitions. Word has length 98 [2021-11-16 23:57:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:57:33,148 INFO L470 AbstractCegarLoop]: Abstraction has 11346 states and 16223 transitions. [2021-11-16 23:57:33,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:57:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11346 states and 16223 transitions. [2021-11-16 23:57:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-16 23:57:33,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:57:33,149 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:57:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-16 23:57:33,149 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:57:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:57:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -386582737, now seen corresponding path program 1 times [2021-11-16 23:57:33,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:57:33,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137670660] [2021-11-16 23:57:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:57:33,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:57:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:57:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:57:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:57:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:57:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:57:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:57:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:57:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:57:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:57:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:57:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:57:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:57:33,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:57:33,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137670660] [2021-11-16 23:57:33,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137670660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:57:33,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:57:33,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:57:33,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764821803] [2021-11-16 23:57:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:57:33,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:57:33,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:57:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:57:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:57:33,397 INFO L87 Difference]: Start difference. First operand 11346 states and 16223 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:57:35,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:37,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:40,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:42,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:45,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:50,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:56,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:57:59,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:58:01,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:07,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:12,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:15,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:19,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:58:22,178 INFO L93 Difference]: Finished difference Result 23292 states and 34038 transitions. [2021-11-16 23:58:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:58:22,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 3 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 99 [2021-11-16 23:58:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:58:22,231 INFO L225 Difference]: With dead ends: 23292 [2021-11-16 23:58:22,231 INFO L226 Difference]: Without dead ends: 23288 [2021-11-16 23:58:22,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:58:22,239 INFO L933 BasicCegarLoop]: 7971 mSDtfsCounter, 8404 mSDsluCounter, 9502 mSDsCounter, 0 mSdLazyCounter, 4977 mSolverCounterSat, 3548 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9496 SdHoareTripleChecker+Valid, 17473 SdHoareTripleChecker+Invalid, 8538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3548 IncrementalHoareTripleChecker+Valid, 4977 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2021-11-16 23:58:22,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9496 Valid, 17473 Invalid, 8538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3548 Valid, 4977 Invalid, 13 Unknown, 0 Unchecked, 47.6s Time] [2021-11-16 23:58:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23288 states. [2021-11-16 23:58:22,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23288 to 21832. [2021-11-16 23:58:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21832 states, 15548 states have (on average 1.351427836377669) internal successors, (21012), 15800 states have internal predecessors, (21012), 5139 states have call successors, (5139), 1099 states have call predecessors, (5139), 1144 states have return successors, (5388), 5138 states have call predecessors, (5388), 5130 states have call successors, (5388) [2021-11-16 23:58:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21832 states to 21832 states and 31539 transitions. [2021-11-16 23:58:22,938 INFO L78 Accepts]: Start accepts. Automaton has 21832 states and 31539 transitions. Word has length 99 [2021-11-16 23:58:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:58:22,939 INFO L470 AbstractCegarLoop]: Abstraction has 21832 states and 31539 transitions. [2021-11-16 23:58:22,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:58:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21832 states and 31539 transitions. [2021-11-16 23:58:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-16 23:58:22,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:58:22,940 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:58:22,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-16 23:58:22,941 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:58:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:58:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 898790441, now seen corresponding path program 1 times [2021-11-16 23:58:22,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:58:22,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635704627] [2021-11-16 23:58:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:58:22,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:58:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:58:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:58:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:58:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:58:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:58:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:58:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:58:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:58:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:58:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:58:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:58:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:58:23,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:58:23,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635704627] [2021-11-16 23:58:23,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635704627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:58:23,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:58:23,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:58:23,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91980796] [2021-11-16 23:58:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:58:23,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:58:23,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:58:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:58:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:58:23,310 INFO L87 Difference]: Start difference. First operand 21832 states and 31539 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:58:25,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:27,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:30,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:32,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:35,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:39,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:44,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:48,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:58:50,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:56,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:59,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:58:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:58:59,963 INFO L93 Difference]: Finished difference Result 23281 states and 33998 transitions. [2021-11-16 23:58:59,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:58:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 3 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 100 [2021-11-16 23:58:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:59:00,015 INFO L225 Difference]: With dead ends: 23281 [2021-11-16 23:59:00,016 INFO L226 Difference]: Without dead ends: 23278 [2021-11-16 23:59:00,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:59:00,025 INFO L933 BasicCegarLoop]: 6884 mSDtfsCounter, 7520 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 2397 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8454 SdHoareTripleChecker+Valid, 10502 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2397 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2021-11-16 23:59:00,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8454 Valid, 10502 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2397 Valid, 3184 Invalid, 11 Unknown, 0 Unchecked, 35.6s Time] [2021-11-16 23:59:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23278 states. [2021-11-16 23:59:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23278 to 21813. [2021-11-16 23:59:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21813 states, 15536 states have (on average 1.351377445932029) internal successors, (20995), 15789 states have internal predecessors, (20995), 5132 states have call successors, (5132), 1099 states have call predecessors, (5132), 1144 states have return successors, (5358), 5130 states have call predecessors, (5358), 5124 states have call successors, (5358) [2021-11-16 23:59:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21813 states to 21813 states and 31485 transitions. [2021-11-16 23:59:00,774 INFO L78 Accepts]: Start accepts. Automaton has 21813 states and 31485 transitions. Word has length 100 [2021-11-16 23:59:00,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:59:00,775 INFO L470 AbstractCegarLoop]: Abstraction has 21813 states and 31485 transitions. [2021-11-16 23:59:00,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:59:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 21813 states and 31485 transitions. [2021-11-16 23:59:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-16 23:59:00,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:59:00,776 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:59:00,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-16 23:59:00,777 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:59:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:59:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2090658162, now seen corresponding path program 1 times [2021-11-16 23:59:00,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:59:00,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833905276] [2021-11-16 23:59:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:59:00,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:59:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:59:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:59:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:59:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:59:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:59:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:59:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:59:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:59:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:59:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:59:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:59:00,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:59:00,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833905276] [2021-11-16 23:59:00,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833905276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:59:00,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:59:00,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:59:00,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446168131] [2021-11-16 23:59:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:59:00,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:59:00,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:59:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:59:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:59:00,992 INFO L87 Difference]: Start difference. First operand 21813 states and 31485 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:59:03,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:05,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:07,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:10,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:13,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:17,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:21,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:24,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:27,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-16 23:59:29,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:38,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 23:59:39,492 INFO L93 Difference]: Finished difference Result 23280 states and 33996 transitions. [2021-11-16 23:59:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 23:59:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 3 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 101 [2021-11-16 23:59:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 23:59:39,632 INFO L225 Difference]: With dead ends: 23280 [2021-11-16 23:59:39,632 INFO L226 Difference]: Without dead ends: 23277 [2021-11-16 23:59:39,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 23:59:39,647 INFO L933 BasicCegarLoop]: 6876 mSDtfsCounter, 7521 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 2399 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8455 SdHoareTripleChecker+Valid, 10494 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2399 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2021-11-16 23:59:39,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8455 Valid, 10494 Invalid, 5591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2399 Valid, 3181 Invalid, 11 Unknown, 0 Unchecked, 37.2s Time] [2021-11-16 23:59:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23277 states. [2021-11-16 23:59:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23277 to 21812. [2021-11-16 23:59:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21812 states, 15536 states have (on average 1.351313079299691) internal successors, (20994), 15788 states have internal predecessors, (20994), 5131 states have call successors, (5131), 1099 states have call predecessors, (5131), 1144 states have return successors, (5358), 5130 states have call predecessors, (5358), 5124 states have call successors, (5358) [2021-11-16 23:59:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21812 states to 21812 states and 31483 transitions. [2021-11-16 23:59:40,550 INFO L78 Accepts]: Start accepts. Automaton has 21812 states and 31483 transitions. Word has length 101 [2021-11-16 23:59:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 23:59:40,550 INFO L470 AbstractCegarLoop]: Abstraction has 21812 states and 31483 transitions. [2021-11-16 23:59:40,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:59:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 21812 states and 31483 transitions. [2021-11-16 23:59:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-16 23:59:40,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 23:59:40,560 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 23:59:40,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-16 23:59:40,560 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 23:59:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 23:59:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash 383856716, now seen corresponding path program 1 times [2021-11-16 23:59:40,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 23:59:40,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110152971] [2021-11-16 23:59:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 23:59:40,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 23:59:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 23:59:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 23:59:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-16 23:59:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-16 23:59:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-16 23:59:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 23:59:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 23:59:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 23:59:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 23:59:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 23:59:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 23:59:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-16 23:59:40,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 23:59:40,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110152971] [2021-11-16 23:59:40,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110152971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 23:59:40,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 23:59:40,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 23:59:40,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662418703] [2021-11-16 23:59:40,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 23:59:40,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 23:59:40,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 23:59:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 23:59:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 23:59:40,892 INFO L87 Difference]: Start difference. First operand 21812 states and 31483 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 23:59:42,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:45,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:47,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:50,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:53,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 23:59:56,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:00,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:02,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:06,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-17 00:00:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:00:15,248 INFO L93 Difference]: Finished difference Result 23436 states and 34234 transitions. [2021-11-17 00:00:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:00:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 3 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 102 [2021-11-17 00:00:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:00:15,329 INFO L225 Difference]: With dead ends: 23436 [2021-11-17 00:00:15,329 INFO L226 Difference]: Without dead ends: 23433 [2021-11-17 00:00:15,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:00:15,342 INFO L933 BasicCegarLoop]: 6813 mSDtfsCounter, 7366 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 2335 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8197 SdHoareTripleChecker+Valid, 9973 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2335 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:00:15,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8197 Valid, 9973 Invalid, 4954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2335 Valid, 2611 Invalid, 8 Unknown, 0 Unchecked, 33.2s Time] [2021-11-17 00:00:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23433 states. [2021-11-17 00:00:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23433 to 21811. [2021-11-17 00:00:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21811 states, 15536 states have (on average 1.3512487126673531) internal successors, (20993), 15787 states have internal predecessors, (20993), 5130 states have call successors, (5130), 1099 states have call predecessors, (5130), 1144 states have return successors, (5358), 5130 states have call predecessors, (5358), 5124 states have call successors, (5358) [2021-11-17 00:00:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21811 states to 21811 states and 31481 transitions. [2021-11-17 00:00:16,343 INFO L78 Accepts]: Start accepts. Automaton has 21811 states and 31481 transitions. Word has length 102 [2021-11-17 00:00:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:00:16,344 INFO L470 AbstractCegarLoop]: Abstraction has 21811 states and 31481 transitions. [2021-11-17 00:00:16,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-17 00:00:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 21811 states and 31481 transitions. [2021-11-17 00:00:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-17 00:00:16,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:00:16,346 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:00:16,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 00:00:16,347 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:00:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:00:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -987375691, now seen corresponding path program 1 times [2021-11-17 00:00:16,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:00:16,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356178402] [2021-11-17 00:00:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:00:16,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:00:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:00:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:00:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:00:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:00:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:00:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:00:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:00:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:00:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:00:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:00:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-17 00:00:16,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:00:16,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356178402] [2021-11-17 00:00:16,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356178402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:00:16,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:00:16,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 00:00:16,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307514264] [2021-11-17 00:00:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:00:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 00:00:16,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:00:16,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 00:00:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 00:00:16,892 INFO L87 Difference]: Start difference. First operand 21811 states and 31481 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-17 00:00:18,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:21,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:24,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:26,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:31,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:36,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:38,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:40,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-17 00:00:42,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:50,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:53,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:00:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:00:54,297 INFO L93 Difference]: Finished difference Result 23289 states and 34015 transitions. [2021-11-17 00:00:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 00:00:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 3 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 103 [2021-11-17 00:00:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:00:54,379 INFO L225 Difference]: With dead ends: 23289 [2021-11-17 00:00:54,379 INFO L226 Difference]: Without dead ends: 23265 [2021-11-17 00:00:54,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:00:54,396 INFO L933 BasicCegarLoop]: 6790 mSDtfsCounter, 7274 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 2285 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8109 SdHoareTripleChecker+Valid, 10048 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2285 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2021-11-17 00:00:54,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8109 Valid, 10048 Invalid, 4983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2285 Valid, 2688 Invalid, 10 Unknown, 0 Unchecked, 36.2s Time] [2021-11-17 00:00:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23265 states. [2021-11-17 00:00:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23265 to 21789. [2021-11-17 00:00:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21789 states, 15517 states have (on average 1.351356576657859) internal successors, (20969), 15767 states have internal predecessors, (20969), 5128 states have call successors, (5128), 1098 states have call predecessors, (5128), 1143 states have return successors, (5357), 5129 states have call predecessors, (5357), 5123 states have call successors, (5357) [2021-11-17 00:00:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21789 states to 21789 states and 31454 transitions. [2021-11-17 00:00:55,437 INFO L78 Accepts]: Start accepts. Automaton has 21789 states and 31454 transitions. Word has length 103 [2021-11-17 00:00:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:00:55,437 INFO L470 AbstractCegarLoop]: Abstraction has 21789 states and 31454 transitions. [2021-11-17 00:00:55,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-17 00:00:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 21789 states and 31454 transitions. [2021-11-17 00:00:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-17 00:00:55,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:00:55,439 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:00:55,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 00:00:55,439 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:00:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:00:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1221044297, now seen corresponding path program 1 times [2021-11-17 00:00:55,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:00:55,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431207628] [2021-11-17 00:00:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:00:55,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:00:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:00:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:00:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:00:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:00:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:00:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:00:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:00:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:00:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:00:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:00:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:00:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:00:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:00:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:00:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-17 00:00:55,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:00:55,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431207628] [2021-11-17 00:00:55,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431207628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:00:55,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:00:55,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 00:00:55,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264002230] [2021-11-17 00:00:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:00:55,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 00:00:55,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:00:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 00:00:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 00:00:55,893 INFO L87 Difference]: Start difference. First operand 21789 states and 31454 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:00:57,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:00,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:02,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:05,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:08,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:15,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:21,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:25,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:28,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:32,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-17 00:01:34,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:36,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:51,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:54,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:01:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:01:55,493 INFO L93 Difference]: Finished difference Result 23269 states and 33992 transitions. [2021-11-17 00:01:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 00:01:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 5 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 123 [2021-11-17 00:01:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:01:55,601 INFO L225 Difference]: With dead ends: 23269 [2021-11-17 00:01:55,601 INFO L226 Difference]: Without dead ends: 23266 [2021-11-17 00:01:55,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 00:01:55,610 INFO L933 BasicCegarLoop]: 5862 mSDtfsCounter, 10860 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 6794 mSolverCounterSat, 7020 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10890 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 13827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7020 IncrementalHoareTripleChecker+Valid, 6794 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.0s IncrementalHoareTripleChecker+Time [2021-11-17 00:01:55,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10890 Valid, 6341 Invalid, 13827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7020 Valid, 6794 Invalid, 13 Unknown, 0 Unchecked, 58.0s Time] [2021-11-17 00:01:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23266 states. [2021-11-17 00:01:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23266 to 21788. [2021-11-17 00:01:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21788 states, 15517 states have (on average 1.3510987948701425) internal successors, (20965), 15766 states have internal predecessors, (20965), 5127 states have call successors, (5127), 1098 states have call predecessors, (5127), 1143 states have return successors, (5357), 5129 states have call predecessors, (5357), 5123 states have call successors, (5357) [2021-11-17 00:01:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21788 states to 21788 states and 31449 transitions. [2021-11-17 00:01:56,580 INFO L78 Accepts]: Start accepts. Automaton has 21788 states and 31449 transitions. Word has length 123 [2021-11-17 00:01:56,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:01:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 21788 states and 31449 transitions. [2021-11-17 00:01:56,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-17 00:01:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21788 states and 31449 transitions. [2021-11-17 00:01:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-17 00:01:56,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:01:56,585 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2021-11-17 00:01:56,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 00:01:56,586 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:01:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:01:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 974775979, now seen corresponding path program 1 times [2021-11-17 00:01:56,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:01:56,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555432250] [2021-11-17 00:01:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:01:56,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:01:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:01:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:01:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:01:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:01:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:01:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:01:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:01:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:01:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:01:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:01:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-17 00:01:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-17 00:01:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:01:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:01:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-17 00:01:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:01:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:01:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:01:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-17 00:01:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-17 00:01:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 00:01:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:01:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:01:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-17 00:01:56,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:01:56,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555432250] [2021-11-17 00:01:56,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555432250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:01:56,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:01:56,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 00:01:56,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259748452] [2021-11-17 00:01:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:01:56,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 00:01:56,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:01:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 00:01:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 00:01:56,980 INFO L87 Difference]: Start difference. First operand 21788 states and 31449 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:01:59,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:01,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:03,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:05,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:09,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:11,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:14,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:17,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:25,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:27,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:37,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:45,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:48,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:52,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-17 00:02:55,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:57,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:02:59,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 00:03:26,551 INFO L93 Difference]: Finished difference Result 56072 states and 81421 transitions. [2021-11-17 00:03:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 00:03:26,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 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 196 [2021-11-17 00:03:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 00:03:26,663 INFO L225 Difference]: With dead ends: 56072 [2021-11-17 00:03:26,663 INFO L226 Difference]: Without dead ends: 34287 [2021-11-17 00:03:26,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-17 00:03:26,776 INFO L933 BasicCegarLoop]: 6831 mSDtfsCounter, 15355 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 14531 mSolverCounterSat, 11487 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15500 SdHoareTripleChecker+Valid, 8046 SdHoareTripleChecker+Invalid, 26035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11487 IncrementalHoareTripleChecker+Valid, 14531 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.8s IncrementalHoareTripleChecker+Time [2021-11-17 00:03:26,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15500 Valid, 8046 Invalid, 26035 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11487 Valid, 14531 Invalid, 17 Unknown, 0 Unchecked, 86.8s Time] [2021-11-17 00:03:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34287 states. [2021-11-17 00:03:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34287 to 27456. [2021-11-17 00:03:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27456 states, 19293 states have (on average 1.3222930596589437) internal successors, (25511), 19612 states have internal predecessors, (25511), 6373 states have call successors, (6373), 1704 states have call predecessors, (6373), 1789 states have return successors, (6825), 6397 states have call predecessors, (6825), 6369 states have call successors, (6825) [2021-11-17 00:03:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27456 states to 27456 states and 38709 transitions. [2021-11-17 00:03:28,294 INFO L78 Accepts]: Start accepts. Automaton has 27456 states and 38709 transitions. Word has length 196 [2021-11-17 00:03:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 00:03:28,294 INFO L470 AbstractCegarLoop]: Abstraction has 27456 states and 38709 transitions. [2021-11-17 00:03:28,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 00:03:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27456 states and 38709 transitions. [2021-11-17 00:03:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-17 00:03:28,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 00:03:28,299 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 00:03:28,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 00:03:28,299 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 00:03:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 00:03:28,300 INFO L85 PathProgramCache]: Analyzing trace with hash -626172758, now seen corresponding path program 1 times [2021-11-17 00:03:28,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 00:03:28,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121298048] [2021-11-17 00:03:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 00:03:28,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 00:03:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 00:03:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-17 00:03:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 00:03:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 00:03:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-17 00:03:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-17 00:03:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-17 00:03:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-17 00:03:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-17 00:03:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 00:03:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-17 00:03:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-17 00:03:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-17 00:03:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-17 00:03:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 00:03:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-17 00:03:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 00:03:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-17 00:03:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-17 00:03:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 00:03:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 00:03:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-17 00:03:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-17 00:03:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-17 00:03:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 00:03:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 00:03:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 00:03:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-17 00:03:28,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 00:03:28,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121298048] [2021-11-17 00:03:28,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121298048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 00:03:28,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 00:03:28,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-17 00:03:28,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301403574] [2021-11-17 00:03:28,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 00:03:28,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-17 00:03:28,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 00:03:28,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-17 00:03:28,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-17 00:03:28,836 INFO L87 Difference]: Start difference. First operand 27456 states and 38709 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 00:03:30,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:32,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:35,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:37,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:42,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:50,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:03:52,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:03,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:05,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:07,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:09,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:20,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:31,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:33,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:35,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:42,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 00:04:44,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15