./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.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 d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:39:11,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:39:11,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:39:11,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:39:11,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:39:11,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:39:11,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:39:11,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:39:11,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:39:11,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:39:11,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:39:11,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:39:11,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:39:11,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:39:11,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:39:11,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:39:11,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:39:11,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:39:11,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:39:11,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:39:11,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:39:11,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:39:11,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:39:11,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:39:11,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:39:11,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:39:11,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:39:11,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:39:11,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:39:11,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:39:11,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:39:11,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:39:11,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:39:11,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:39:11,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:39:11,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:39:11,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:39:11,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:39:11,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:39:11,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:39:11,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:39:11,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:39:11,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:39:11,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:39:11,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:39:11,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:39:11,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:39:11,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:39:11,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:39:11,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:39:11,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:39:11,519 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:39:11,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:39:11,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:39:11,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:39:11,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:39:11,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:39:11,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:39:11,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:39:11,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:39:11,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:39:11,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:39:11,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:39:11,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:39:11,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:39:11,523 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:39:11,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:39:11,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:39:11,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b [2022-07-20 00:39:11,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:39:11,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:39:11,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:39:11,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:39:11,768 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:39:11,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-07-20 00:39:11,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec533539/c050e34d97f74af38d2e459d09b72fe2/FLAG7f4c8fff8 [2022-07-20 00:39:12,614 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:39:12,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-07-20 00:39:12,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec533539/c050e34d97f74af38d2e459d09b72fe2/FLAG7f4c8fff8 [2022-07-20 00:39:12,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec533539/c050e34d97f74af38d2e459d09b72fe2 [2022-07-20 00:39:12,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:39:12,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:39:12,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:39:12,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:39:12,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:39:12,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:39:12" (1/1) ... [2022-07-20 00:39:12,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d324c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:12, skipping insertion in model container [2022-07-20 00:39:12,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:39:12" (1/1) ... [2022-07-20 00:39:12,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:39:12,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:39:15,849 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2022-07-20 00:39:16,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:39:16,172 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:39:16,674 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i[477998,478011] [2022-07-20 00:39:16,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:39:16,796 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:39:16,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16 WrapperNode [2022-07-20 00:39:16,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:39:16,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:39:16,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:39:16,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:39:16,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:16,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,000 INFO L137 Inliner]: procedures = 483, calls = 2853, calls flagged for inlining = 237, calls inlined = 184, statements flattened = 6966 [2022-07-20 00:39:17,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:39:17,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:39:17,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:39:17,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:39:17,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:39:17,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:39:17,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:39:17,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:39:17,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (1/1) ... [2022-07-20 00:39:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:39:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:39:17,321 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) [2022-07-20 00:39:17,324 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 [2022-07-20 00:39:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2022-07-20 00:39:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2022-07-20 00:39:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:39:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:39:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2022-07-20 00:39:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2022-07-20 00:39:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:39:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:39:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-07-20 00:39:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-07-20 00:39:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-20 00:39:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-20 00:39:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-07-20 00:39:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-07-20 00:39:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2022-07-20 00:39:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2022-07-20 00:39:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2022-07-20 00:39:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2022-07-20 00:39:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-07-20 00:39:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-07-20 00:39:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2022-07-20 00:39:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2022-07-20 00:39:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-20 00:39:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-20 00:39:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2022-07-20 00:39:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2022-07-20 00:39:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2022-07-20 00:39:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2022-07-20 00:39:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 00:39:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 00:39:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-07-20 00:39:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-07-20 00:39:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2022-07-20 00:39:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2022-07-20 00:39:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2022-07-20 00:39:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2022-07-20 00:39:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-07-20 00:39:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-07-20 00:39:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 00:39:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 00:39:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-20 00:39:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-20 00:39:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-07-20 00:39:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-07-20 00:39:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:39:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2022-07-20 00:39:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2022-07-20 00:39:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2022-07-20 00:39:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2022-07-20 00:39:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-07-20 00:39:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-07-20 00:39:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-20 00:39:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-20 00:39:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-20 00:39:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2022-07-20 00:39:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2022-07-20 00:39:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-20 00:39:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-20 00:39:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2022-07-20 00:39:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2022-07-20 00:39:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 00:39:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-20 00:39:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-20 00:39:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2022-07-20 00:39:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2022-07-20 00:39:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 00:39:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 00:39:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2022-07-20 00:39:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2022-07-20 00:39:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2022-07-20 00:39:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2022-07-20 00:39:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2022-07-20 00:39:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2022-07-20 00:39:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-20 00:39:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-20 00:39:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-20 00:39:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-20 00:39:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-07-20 00:39:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-07-20 00:39:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2022-07-20 00:39:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2022-07-20 00:39:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:39:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:39:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:39:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-07-20 00:39:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-20 00:39:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 00:39:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 00:39:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2022-07-20 00:39:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2022-07-20 00:39:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-07-20 00:39:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-07-20 00:39:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2022-07-20 00:39:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2022-07-20 00:39:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2022-07-20 00:39:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2022-07-20 00:39:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-20 00:39:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-20 00:39:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2022-07-20 00:39:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2022-07-20 00:39:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-20 00:39:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-20 00:39:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2022-07-20 00:39:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2022-07-20 00:39:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2022-07-20 00:39:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2022-07-20 00:39:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2022-07-20 00:39:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2022-07-20 00:39:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2022-07-20 00:39:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2022-07-20 00:39:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2022-07-20 00:39:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2022-07-20 00:39:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:39:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:39:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-20 00:39:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-20 00:39:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-20 00:39:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-20 00:39:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 00:39:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2022-07-20 00:39:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2022-07-20 00:39:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:39:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:39:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2022-07-20 00:39:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2022-07-20 00:39:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-20 00:39:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-20 00:39:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2022-07-20 00:39:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2022-07-20 00:39:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2022-07-20 00:39:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2022-07-20 00:39:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2022-07-20 00:39:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2022-07-20 00:39:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-20 00:39:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-20 00:39:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-07-20 00:39:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-07-20 00:39:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2022-07-20 00:39:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2022-07-20 00:39:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-07-20 00:39:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-07-20 00:39:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 00:39:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 00:39:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2022-07-20 00:39:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2022-07-20 00:39:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:39:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:39:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-07-20 00:39:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-07-20 00:39:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2022-07-20 00:39:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2022-07-20 00:39:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2022-07-20 00:39:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2022-07-20 00:39:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 00:39:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 00:39:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:39:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:39:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-20 00:39:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-20 00:39:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2022-07-20 00:39:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2022-07-20 00:39:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-20 00:39:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-20 00:39:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-20 00:39:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-20 00:39:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:39:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-20 00:39:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-20 00:39:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2022-07-20 00:39:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2022-07-20 00:39:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2022-07-20 00:39:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2022-07-20 00:39:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:39:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-20 00:39:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-20 00:39:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2022-07-20 00:39:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2022-07-20 00:39:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:39:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2022-07-20 00:39:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2022-07-20 00:39:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-20 00:39:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-20 00:39:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-20 00:39:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-20 00:39:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-20 00:39:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-20 00:39:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-20 00:39:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-20 00:39:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-20 00:39:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-20 00:39:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2022-07-20 00:39:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2022-07-20 00:39:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2022-07-20 00:39:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2022-07-20 00:39:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2022-07-20 00:39:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2022-07-20 00:39:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-20 00:39:17,370 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-20 00:39:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2022-07-20 00:39:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2022-07-20 00:39:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-07-20 00:39:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-07-20 00:39:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2022-07-20 00:39:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2022-07-20 00:39:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-20 00:39:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-20 00:39:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_list_mutex [2022-07-20 00:39:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_list_mutex [2022-07-20 00:39:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_list_mutex [2022-07-20 00:39:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_list_mutex [2022-07-20 00:39:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-07-20 00:39:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-07-20 00:39:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2022-07-20 00:39:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2022-07-20 00:39:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-07-20 00:39:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-07-20 00:39:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2022-07-20 00:39:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2022-07-20 00:39:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 00:39:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 00:39:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2022-07-20 00:39:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2022-07-20 00:39:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-07-20 00:39:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-07-20 00:39:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 00:39:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2022-07-20 00:39:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2022-07-20 00:39:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:39:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:39:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2022-07-20 00:39:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2022-07-20 00:39:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2022-07-20 00:39:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2022-07-20 00:39:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-20 00:39:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-20 00:39:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-07-20 00:39:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-07-20 00:39:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2022-07-20 00:39:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2022-07-20 00:39:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2022-07-20 00:39:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2022-07-20 00:39:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-20 00:39:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-20 00:39:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2022-07-20 00:39:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2022-07-20 00:39:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-07-20 00:39:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-07-20 00:39:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2022-07-20 00:39:17,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-20 00:39:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2022-07-20 00:39:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2022-07-20 00:39:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-07-20 00:39:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-07-20 00:39:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-07-20 00:39:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-07-20 00:39:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2022-07-20 00:39:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2022-07-20 00:39:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2022-07-20 00:39:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2022-07-20 00:39:18,128 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:39:18,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:39:18,412 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:39:23,918 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:39:23,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:39:23,943 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 00:39:23,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:39:23 BoogieIcfgContainer [2022-07-20 00:39:23,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:39:23,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:39:23,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:39:23,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:39:23,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:39:12" (1/3) ... [2022-07-20 00:39:23,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbbe5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:39:23, skipping insertion in model container [2022-07-20 00:39:23,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:39:16" (2/3) ... [2022-07-20 00:39:23,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbbe5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:39:23, skipping insertion in model container [2022-07-20 00:39:23,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:39:23" (3/3) ... [2022-07-20 00:39:23,964 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-07-20 00:39:23,973 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:39:23,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:39:24,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:39:24,037 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1996cc10, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50fb251b [2022-07-20 00:39:24,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:39:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 2358 states, 1636 states have (on average 1.3361858190709046) internal successors, (2186), 1696 states have internal predecessors, (2186), 590 states have call successors, (590), 131 states have call predecessors, (590), 130 states have return successors, (584), 573 states have call predecessors, (584), 584 states have call successors, (584) [2022-07-20 00:39:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-20 00:39:24,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:24,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:24,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 926087783, now seen corresponding path program 1 times [2022-07-20 00:39:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:24,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85037758] [2022-07-20 00:39:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:24,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:39:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:39:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:39:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:39:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:39:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85037758] [2022-07-20 00:39:24,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85037758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:24,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:24,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:39:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681614539] [2022-07-20 00:39:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:24,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:39:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:39:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:39:24,738 INFO L87 Difference]: Start difference. First operand has 2358 states, 1636 states have (on average 1.3361858190709046) internal successors, (2186), 1696 states have internal predecessors, (2186), 590 states have call successors, (590), 131 states have call predecessors, (590), 130 states have return successors, (584), 573 states have call predecessors, (584), 584 states have call successors, (584) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:39:27,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:29,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:34,573 INFO L93 Difference]: Finished difference Result 5481 states and 8253 transitions. [2022-07-20 00:39:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 00:39:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-07-20 00:39:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:34,617 INFO L225 Difference]: With dead ends: 5481 [2022-07-20 00:39:34,617 INFO L226 Difference]: Without dead ends: 3105 [2022-07-20 00:39:34,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:39:34,643 INFO L413 NwaCegarLoop]: 3006 mSDtfsCounter, 2717 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 2127 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 5736 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:34,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2785 Valid, 5736 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2127 Valid, 2294 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2022-07-20 00:39:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2022-07-20 00:39:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2335. [2022-07-20 00:39:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1621 states have (on average 1.3183220234423196) internal successors, (2137), 1673 states have internal predecessors, (2137), 584 states have call successors, (584), 130 states have call predecessors, (584), 129 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-07-20 00:39:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3293 transitions. [2022-07-20 00:39:34,891 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3293 transitions. Word has length 82 [2022-07-20 00:39:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:34,891 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3293 transitions. [2022-07-20 00:39:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:39:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3293 transitions. [2022-07-20 00:39:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-20 00:39:34,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:34,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:34,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 00:39:34,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -41262871, now seen corresponding path program 1 times [2022-07-20 00:39:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838576020] [2022-07-20 00:39:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:39:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:39:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:39:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:39:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:39:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:35,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838576020] [2022-07-20 00:39:35,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838576020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:35,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:35,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:39:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929075644] [2022-07-20 00:39:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:35,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:39:35,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:39:35,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:39:35,340 INFO L87 Difference]: Start difference. First operand 2335 states and 3293 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:39:37,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:39,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:43,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:45,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:39:52,330 INFO L93 Difference]: Finished difference Result 3124 states and 4643 transitions. [2022-07-20 00:39:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:39:52,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-07-20 00:39:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:39:52,345 INFO L225 Difference]: With dead ends: 3124 [2022-07-20 00:39:52,345 INFO L226 Difference]: Without dead ends: 3120 [2022-07-20 00:39:52,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:39:52,347 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 5460 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 2705 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5796 SdHoareTripleChecker+Valid, 6889 SdHoareTripleChecker+Invalid, 5862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2705 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:39:52,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5796 Valid, 6889 Invalid, 5862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2705 Valid, 3153 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2022-07-20 00:39:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2022-07-20 00:39:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2348. [2022-07-20 00:39:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 1631 states have (on average 1.3151440833844268) internal successors, (2145), 1681 states have internal predecessors, (2145), 582 states have call successors, (582), 135 states have call predecessors, (582), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-07-20 00:39:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3299 transitions. [2022-07-20 00:39:52,443 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3299 transitions. Word has length 82 [2022-07-20 00:39:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:39:52,444 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 3299 transitions. [2022-07-20 00:39:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:39:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3299 transitions. [2022-07-20 00:39:52,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-20 00:39:52,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:39:52,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:39:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 00:39:52,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:39:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:39:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1280119528, now seen corresponding path program 1 times [2022-07-20 00:39:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:39:52,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198824225] [2022-07-20 00:39:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:39:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:39:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:39:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:39:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:39:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:39:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:39:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:39:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:39:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:39:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:39:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:39:52,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198824225] [2022-07-20 00:39:52,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198824225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:39:52,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:39:52,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:39:52,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518175720] [2022-07-20 00:39:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:39:52,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:39:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:39:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:39:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:39:52,808 INFO L87 Difference]: Start difference. First operand 2348 states and 3299 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:39:55,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:39:57,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:01,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:03,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:05,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:09,285 INFO L93 Difference]: Finished difference Result 3120 states and 4638 transitions. [2022-07-20 00:40:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:40:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-20 00:40:09,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:09,333 INFO L225 Difference]: With dead ends: 3120 [2022-07-20 00:40:09,333 INFO L226 Difference]: Without dead ends: 3117 [2022-07-20 00:40:09,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:40:09,341 INFO L413 NwaCegarLoop]: 2918 mSDtfsCounter, 5519 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 2730 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5862 SdHoareTripleChecker+Valid, 5744 SdHoareTripleChecker+Invalid, 5054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2730 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:09,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5862 Valid, 5744 Invalid, 5054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2730 Valid, 2320 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2022-07-20 00:40:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-07-20 00:40:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2347. [2022-07-20 00:40:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1631 states have (on average 1.3145309625996322) internal successors, (2144), 1680 states have internal predecessors, (2144), 581 states have call successors, (581), 135 states have call predecessors, (581), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-07-20 00:40:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3297 transitions. [2022-07-20 00:40:09,462 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3297 transitions. Word has length 83 [2022-07-20 00:40:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:09,462 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 3297 transitions. [2022-07-20 00:40:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3297 transitions. [2022-07-20 00:40:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-20 00:40:09,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:09,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 00:40:09,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1029965364, now seen corresponding path program 1 times [2022-07-20 00:40:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:09,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965181571] [2022-07-20 00:40:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:40:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:40:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:40:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:40:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:40:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:40:09,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:09,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965181571] [2022-07-20 00:40:09,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965181571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:09,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:09,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:40:09,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984664771] [2022-07-20 00:40:09,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:40:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:40:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:40:09,776 INFO L87 Difference]: Start difference. First operand 2347 states and 3297 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:12,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:14,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:21,016 INFO L93 Difference]: Finished difference Result 3119 states and 4636 transitions. [2022-07-20 00:40:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:40:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-07-20 00:40:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:21,030 INFO L225 Difference]: With dead ends: 3119 [2022-07-20 00:40:21,030 INFO L226 Difference]: Without dead ends: 3116 [2022-07-20 00:40:21,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:40:21,034 INFO L413 NwaCegarLoop]: 2910 mSDtfsCounter, 5916 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 2869 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6263 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 5195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2869 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:21,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6263 Valid, 5591 Invalid, 5195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2869 Valid, 2324 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2022-07-20 00:40:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-07-20 00:40:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2346. [2022-07-20 00:40:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 1631 states have (on average 1.3139178418148376) internal successors, (2143), 1679 states have internal predecessors, (2143), 580 states have call successors, (580), 135 states have call predecessors, (580), 134 states have return successors, (572), 561 states have call predecessors, (572), 572 states have call successors, (572) [2022-07-20 00:40:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3295 transitions. [2022-07-20 00:40:21,129 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3295 transitions. Word has length 84 [2022-07-20 00:40:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:21,130 INFO L495 AbstractCegarLoop]: Abstraction has 2346 states and 3295 transitions. [2022-07-20 00:40:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3295 transitions. [2022-07-20 00:40:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-20 00:40:21,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:21,132 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:21,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 00:40:21,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash 81815386, now seen corresponding path program 1 times [2022-07-20 00:40:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:21,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931441506] [2022-07-20 00:40:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:21,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:40:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:40:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:40:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:40:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:40:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:40:21,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:21,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931441506] [2022-07-20 00:40:21,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931441506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:21,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:21,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:40:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922246578] [2022-07-20 00:40:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:21,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:40:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:21,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:40:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:40:21,406 INFO L87 Difference]: Start difference. First operand 2346 states and 3295 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-20 00:40:26,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:28,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:38,384 INFO L93 Difference]: Finished difference Result 8053 states and 11743 transitions. [2022-07-20 00:40:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:40:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2022-07-20 00:40:38,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:38,405 INFO L225 Difference]: With dead ends: 8053 [2022-07-20 00:40:38,406 INFO L226 Difference]: Without dead ends: 5728 [2022-07-20 00:40:38,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:40:38,415 INFO L413 NwaCegarLoop]: 3303 mSDtfsCounter, 6984 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 4910 mSolverCounterSat, 4233 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7298 SdHoareTripleChecker+Valid, 8309 SdHoareTripleChecker+Invalid, 9145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4233 IncrementalHoareTripleChecker+Valid, 4910 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:38,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7298 Valid, 8309 Invalid, 9145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4233 Valid, 4910 Invalid, 2 Unknown, 0 Unchecked, 16.5s Time] [2022-07-20 00:40:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2022-07-20 00:40:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 4194. [2022-07-20 00:40:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 2930 states have (on average 1.3112627986348122) internal successors, (3842), 3018 states have internal predecessors, (3842), 1002 states have call successors, (1002), 262 states have call predecessors, (1002), 261 states have return successors, (994), 971 states have call predecessors, (994), 994 states have call successors, (994) [2022-07-20 00:40:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 5838 transitions. [2022-07-20 00:40:38,566 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 5838 transitions. Word has length 86 [2022-07-20 00:40:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:38,566 INFO L495 AbstractCegarLoop]: Abstraction has 4194 states and 5838 transitions. [2022-07-20 00:40:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-20 00:40:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 5838 transitions. [2022-07-20 00:40:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-20 00:40:38,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:38,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 00:40:38,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1865116005, now seen corresponding path program 1 times [2022-07-20 00:40:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:38,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044716826] [2022-07-20 00:40:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:38,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:40:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:40:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:40:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:40:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:40:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:40:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:38,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044716826] [2022-07-20 00:40:38,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044716826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:38,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:38,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:40:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316283183] [2022-07-20 00:40:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:40:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:40:38,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:40:38,814 INFO L87 Difference]: Start difference. First operand 4194 states and 5838 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:43,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:45,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:40:49,835 INFO L93 Difference]: Finished difference Result 5710 states and 8452 transitions. [2022-07-20 00:40:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:40:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2022-07-20 00:40:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:40:49,860 INFO L225 Difference]: With dead ends: 5710 [2022-07-20 00:40:49,861 INFO L226 Difference]: Without dead ends: 5707 [2022-07-20 00:40:49,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:40:49,866 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 5878 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 2849 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6222 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 5183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2849 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:40:49,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6222 Valid, 5630 Invalid, 5183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2849 Valid, 2332 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2022-07-20 00:40:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-07-20 00:40:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 4193. [2022-07-20 00:40:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 2930 states have (on average 1.3109215017064846) internal successors, (3841), 3017 states have internal predecessors, (3841), 1001 states have call successors, (1001), 262 states have call predecessors, (1001), 261 states have return successors, (994), 971 states have call predecessors, (994), 994 states have call successors, (994) [2022-07-20 00:40:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 5836 transitions. [2022-07-20 00:40:50,055 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 5836 transitions. Word has length 85 [2022-07-20 00:40:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:40:50,056 INFO L495 AbstractCegarLoop]: Abstraction has 4193 states and 5836 transitions. [2022-07-20 00:40:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 5836 transitions. [2022-07-20 00:40:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-20 00:40:50,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:40:50,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:40:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 00:40:50,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:40:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:40:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1984977233, now seen corresponding path program 1 times [2022-07-20 00:40:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:40:50,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812903578] [2022-07-20 00:40:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:40:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:40:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:40:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:40:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:40:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:40:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:40:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:40:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:40:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:40:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:40:50,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:40:50,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812903578] [2022-07-20 00:40:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812903578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:40:50,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:40:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:40:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228288325] [2022-07-20 00:40:50,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:40:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:40:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:40:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:40:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:40:50,304 INFO L87 Difference]: Start difference. First operand 4193 states and 5836 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:40:53,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:55,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:40:58,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:01,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:06,855 INFO L93 Difference]: Finished difference Result 5729 states and 8463 transitions. [2022-07-20 00:41:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:41:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-07-20 00:41:06,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:06,885 INFO L225 Difference]: With dead ends: 5729 [2022-07-20 00:41:06,886 INFO L226 Difference]: Without dead ends: 5725 [2022-07-20 00:41:06,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:41:06,891 INFO L413 NwaCegarLoop]: 2927 mSDtfsCounter, 5427 mSDsluCounter, 3955 mSDsCounter, 0 mSdLazyCounter, 3148 mSolverCounterSat, 2695 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5749 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2695 IncrementalHoareTripleChecker+Valid, 3148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:06,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5749 Valid, 6882 Invalid, 5847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2695 Valid, 3148 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2022-07-20 00:41:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2022-07-20 00:41:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4209. [2022-07-20 00:41:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 2942 states have (on average 1.308633582596873) internal successors, (3850), 3027 states have internal predecessors, (3850), 999 states have call successors, (999), 268 states have call predecessors, (999), 267 states have return successors, (994), 971 states have call predecessors, (994), 994 states have call successors, (994) [2022-07-20 00:41:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 5843 transitions. [2022-07-20 00:41:07,138 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 5843 transitions. Word has length 86 [2022-07-20 00:41:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:41:07,138 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 5843 transitions. [2022-07-20 00:41:07,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:41:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 5843 transitions. [2022-07-20 00:41:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-20 00:41:07,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:41:07,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:41:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 00:41:07,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:41:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:41:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1405703138, now seen corresponding path program 1 times [2022-07-20 00:41:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:41:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808785853] [2022-07-20 00:41:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:41:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:41:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:41:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:41:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:41:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:41:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:41:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:41:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:41:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:41:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808785853] [2022-07-20 00:41:07,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808785853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:41:07,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:41:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:41:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840299472] [2022-07-20 00:41:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:41:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:41:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:41:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:41:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:41:07,395 INFO L87 Difference]: Start difference. First operand 4209 states and 5843 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:41:10,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:13,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:15,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:20,819 INFO L93 Difference]: Finished difference Result 6256 states and 9136 transitions. [2022-07-20 00:41:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:41:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2022-07-20 00:41:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:20,861 INFO L225 Difference]: With dead ends: 6256 [2022-07-20 00:41:20,861 INFO L226 Difference]: Without dead ends: 6236 [2022-07-20 00:41:20,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:41:20,883 INFO L413 NwaCegarLoop]: 2965 mSDtfsCounter, 6074 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 2989 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6424 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 5747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2989 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:20,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6424 Valid, 5731 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2989 Valid, 2755 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2022-07-20 00:41:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-07-20 00:41:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 4619. [2022-07-20 00:41:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4619 states, 3213 states have (on average 1.2978524743230626) internal successors, (4170), 3303 states have internal predecessors, (4170), 1084 states have call successors, (1084), 322 states have call predecessors, (1084), 321 states have return successors, (1079), 1057 states have call predecessors, (1079), 1079 states have call successors, (1079) [2022-07-20 00:41:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 6333 transitions. [2022-07-20 00:41:21,105 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 6333 transitions. Word has length 87 [2022-07-20 00:41:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:41:21,106 INFO L495 AbstractCegarLoop]: Abstraction has 4619 states and 6333 transitions. [2022-07-20 00:41:21,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 00:41:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 6333 transitions. [2022-07-20 00:41:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-20 00:41:21,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:41:21,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:41:21,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 00:41:21,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:41:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:41:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash 244158121, now seen corresponding path program 1 times [2022-07-20 00:41:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:41:21,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150894270] [2022-07-20 00:41:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:41:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:41:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:41:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:41:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:41:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:41:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:41:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:41:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-20 00:41:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-20 00:41:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-20 00:41:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-20 00:41:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-20 00:41:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:41:21,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150894270] [2022-07-20 00:41:21,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150894270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:41:21,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:41:21,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 00:41:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484367774] [2022-07-20 00:41:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:41:21,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 00:41:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:41:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 00:41:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:41:21,360 INFO L87 Difference]: Start difference. First operand 4619 states and 6333 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:41:26,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:32,236 INFO L93 Difference]: Finished difference Result 6881 states and 10204 transitions. [2022-07-20 00:41:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 00:41:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-20 00:41:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:32,261 INFO L225 Difference]: With dead ends: 6881 [2022-07-20 00:41:32,262 INFO L226 Difference]: Without dead ends: 6860 [2022-07-20 00:41:32,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-20 00:41:32,267 INFO L413 NwaCegarLoop]: 2718 mSDtfsCounter, 5712 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 5314 mSolverCounterSat, 4571 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5994 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4571 IncrementalHoareTripleChecker+Valid, 5314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:32,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5994 Valid, 5535 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4571 Valid, 5314 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-07-20 00:41:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2022-07-20 00:41:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 4600. [2022-07-20 00:41:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 3205 states have (on average 1.2973478939157566) internal successors, (4158), 3292 states have internal predecessors, (4158), 1073 states have call successors, (1073), 322 states have call predecessors, (1073), 321 states have return successors, (1071), 1049 states have call predecessors, (1071), 1071 states have call successors, (1071) [2022-07-20 00:41:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6302 transitions. [2022-07-20 00:41:32,475 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6302 transitions. Word has length 106 [2022-07-20 00:41:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:41:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6302 transitions. [2022-07-20 00:41:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 00:41:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6302 transitions. [2022-07-20 00:41:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-20 00:41:32,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:41:32,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 00:41:32,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 00:41:32,485 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:41:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:41:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1315434094, now seen corresponding path program 1 times [2022-07-20 00:41:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:41:32,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912879148] [2022-07-20 00:41:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:41:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:41:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:41:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:41:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:41:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:41:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:41:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:41:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-20 00:41:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-20 00:41:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-20 00:41:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-20 00:41:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-20 00:41:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-20 00:41:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-20 00:41:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-20 00:41:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 00:41:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-20 00:41:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:41:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-20 00:41:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-20 00:41:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:41:32,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912879148] [2022-07-20 00:41:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912879148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:41:32,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:41:32,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 00:41:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064588044] [2022-07-20 00:41:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:41:32,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 00:41:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:41:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 00:41:32,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-20 00:41:32,862 INFO L87 Difference]: Start difference. First operand 4600 states and 6302 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 00:41:39,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:49,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:41:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:49,552 INFO L93 Difference]: Finished difference Result 6921 states and 10233 transitions. [2022-07-20 00:41:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-20 00:41:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 169 [2022-07-20 00:41:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:49,578 INFO L225 Difference]: With dead ends: 6921 [2022-07-20 00:41:49,578 INFO L226 Difference]: Without dead ends: 6918 [2022-07-20 00:41:49,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-07-20 00:41:49,582 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 7490 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 8476 mSolverCounterSat, 5803 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7607 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 14281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5803 IncrementalHoareTripleChecker+Valid, 8476 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:49,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7607 Valid, 5405 Invalid, 14281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5803 Valid, 8476 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-07-20 00:41:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2022-07-20 00:41:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 4599. [2022-07-20 00:41:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 3205 states have (on average 1.2967238689547582) internal successors, (4156), 3291 states have internal predecessors, (4156), 1072 states have call successors, (1072), 322 states have call predecessors, (1072), 321 states have return successors, (1071), 1049 states have call predecessors, (1071), 1071 states have call successors, (1071) [2022-07-20 00:41:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6299 transitions. [2022-07-20 00:41:49,781 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6299 transitions. Word has length 169 [2022-07-20 00:41:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:41:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 4599 states and 6299 transitions. [2022-07-20 00:41:49,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (28), 8 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 00:41:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6299 transitions. [2022-07-20 00:41:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-20 00:41:49,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:41:49,793 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 00:41:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 00:41:49,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:41:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:41:49,793 INFO L85 PathProgramCache]: Analyzing trace with hash 402287534, now seen corresponding path program 1 times [2022-07-20 00:41:49,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 00:41:49,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362153927] [2022-07-20 00:41:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:41:49,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 00:41:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 00:41:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-20 00:41:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-20 00:41:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-20 00:41:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-20 00:41:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-20 00:41:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-20 00:41:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-20 00:41:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-20 00:41:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-20 00:41:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-20 00:41:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-20 00:41:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-20 00:41:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-20 00:41:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-20 00:41:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-20 00:41:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-20 00:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-20 00:41:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-20 00:41:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-20 00:41:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-20 00:41:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-20 00:41:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 00:41:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362153927] [2022-07-20 00:41:50,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362153927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 00:41:50,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716467199] [2022-07-20 00:41:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:41:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 00:41:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:41:50,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 00:41:50,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 00:41:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:41:51,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 00:41:51,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:41:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-20 00:41:51,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:41:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716467199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:41:51,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 00:41:51,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-20 00:41:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205361168] [2022-07-20 00:41:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:41:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:41:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 00:41:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:41:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:41:51,469 INFO L87 Difference]: Start difference. First operand 4599 states and 6299 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 00:41:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:41:51,836 INFO L93 Difference]: Finished difference Result 4599 states and 6299 transitions. [2022-07-20 00:41:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:41:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 189 [2022-07-20 00:41:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:41:51,839 INFO L225 Difference]: With dead ends: 4599 [2022-07-20 00:41:51,839 INFO L226 Difference]: Without dead ends: 0 [2022-07-20 00:41:51,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:41:51,855 INFO L413 NwaCegarLoop]: 3247 mSDtfsCounter, 68 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6414 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:41:51,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 6414 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 00:41:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-20 00:41:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-20 00:41:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 00:41:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-20 00:41:51,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2022-07-20 00:41:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:41:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-20 00:41:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 00:41:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-20 00:41:51,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-20 00:41:51,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 00:41:51,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 00:41:52,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-20 00:41:52,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-20 00:42:02,742 WARN L233 SmtUtils]: Spent 10.64s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:42:12,963 WARN L233 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:42:23,186 WARN L233 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:42:33,929 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 67 DAG size of output: 64 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:42:44,673 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 67 DAG size of output: 64 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:42:54,949 WARN L233 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:43:05,666 WARN L233 SmtUtils]: Spent 10.71s on a formula simplification. DAG size of input: 67 DAG size of output: 64 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:43:15,826 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:43:26,003 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-20 00:43:36,703 WARN L233 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 67 DAG size of output: 64 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)