./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 6c24879c 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-?-6c24879 [2022-07-12 13:36:20,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 13:36:20,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 13:36:20,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 13:36:20,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 13:36:20,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 13:36:20,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 13:36:20,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 13:36:20,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 13:36:20,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 13:36:20,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 13:36:20,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 13:36:20,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 13:36:20,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 13:36:20,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 13:36:20,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 13:36:20,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 13:36:20,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 13:36:20,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 13:36:20,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 13:36:20,233 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 13:36:20,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 13:36:20,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 13:36:20,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 13:36:20,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 13:36:20,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 13:36:20,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 13:36:20,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 13:36:20,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 13:36:20,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 13:36:20,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 13:36:20,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 13:36:20,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 13:36:20,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 13:36:20,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 13:36:20,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 13:36:20,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 13:36:20,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 13:36:20,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 13:36:20,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 13:36:20,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 13:36:20,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 13:36:20,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 13:36:20,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 13:36:20,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 13:36:20,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 13:36:20,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 13:36:20,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 13:36:20,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 13:36:20,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 13:36:20,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 13:36:20,287 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 13:36:20,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 13:36:20,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 13:36:20,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 13:36:20,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 13:36:20,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 13:36:20,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 13:36:20,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 13:36:20,289 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 13:36:20,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 13:36:20,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 13:36:20,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 13:36:20,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 13:36:20,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 13:36:20,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 13:36:20,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 13:36:20,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 13:36:20,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 13:36:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 13:36:20,291 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 13:36:20,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 13:36:20,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 13:36:20,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b [2022-07-12 13:36:20,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 13:36:20,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 13:36:20,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 13:36:20,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 13:36:20,570 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 13:36:20,572 INFO L432 ainManager$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 [2022-07-12 13:36:20,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4148c91a/92720f9edf28417986ff93d8559a6546/FLAG5e26d862e [2022-07-12 13:36:21,435 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 13:36:21,436 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 [2022-07-12 13:36:21,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4148c91a/92720f9edf28417986ff93d8559a6546/FLAG5e26d862e [2022-07-12 13:36:21,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4148c91a/92720f9edf28417986ff93d8559a6546 [2022-07-12 13:36:21,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 13:36:21,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 13:36:21,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 13:36:21,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 13:36:21,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 13:36:21,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:36:21" (1/1) ... [2022-07-12 13:36:21,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159d8f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:21, skipping insertion in model container [2022-07-12 13:36:21,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:36:21" (1/1) ... [2022-07-12 13:36:21,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 13:36:21,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 13:36:25,217 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] [2022-07-12 13:36:25,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:36:25,627 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 13:36:26,292 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] [2022-07-12 13:36:26,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 13:36:26,421 INFO L208 MainTranslator]: Completed translation [2022-07-12 13:36:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26 WrapperNode [2022-07-12 13:36:26,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 13:36:26,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 13:36:26,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 13:36:26,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 13:36:26,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,724 INFO L137 Inliner]: procedures = 483, calls = 2853, calls flagged for inlining = 237, calls inlined = 184, statements flattened = 6966 [2022-07-12 13:36:26,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 13:36:26,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 13:36:26,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 13:36:26,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 13:36:26,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:26,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:27,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 13:36:27,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 13:36:27,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 13:36:27,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 13:36:27,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (1/1) ... [2022-07-12 13:36:27,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 13:36:27,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 13:36:27,056 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) [2022-07-12 13:36:27,096 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2022-07-12 13:36:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2022-07-12 13:36:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 13:36:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 13:36:27,097 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2022-07-12 13:36:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2022-07-12 13:36:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 13:36:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 13:36:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-07-12 13:36:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-07-12 13:36:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-12 13:36:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-12 13:36:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-07-12 13:36:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-07-12 13:36:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2022-07-12 13:36:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2022-07-12 13:36:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2022-07-12 13:36:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2022-07-12 13:36:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-07-12 13:36:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-07-12 13:36:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2022-07-12 13:36:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2022-07-12 13:36:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-12 13:36:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-12 13:36:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2022-07-12 13:36:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2022-07-12 13:36:27,100 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2022-07-12 13:36:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2022-07-12 13:36:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 13:36:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 13:36:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-07-12 13:36:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-07-12 13:36:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2022-07-12 13:36:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2022-07-12 13:36:27,101 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2022-07-12 13:36:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2022-07-12 13:36:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-07-12 13:36:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-07-12 13:36:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-12 13:36:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-12 13:36:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 13:36:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 13:36:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-07-12 13:36:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-07-12 13:36:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 13:36:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2022-07-12 13:36:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2022-07-12 13:36:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2022-07-12 13:36:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2022-07-12 13:36:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-07-12 13:36:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-07-12 13:36:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 13:36:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 13:36:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-12 13:36:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-12 13:36:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2022-07-12 13:36:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2022-07-12 13:36:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 13:36:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2022-07-12 13:36:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2022-07-12 13:36:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-12 13:36:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-12 13:36:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 13:36:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2022-07-12 13:36:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2022-07-12 13:36:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 13:36:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-12 13:36:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-12 13:36:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2022-07-12 13:36:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2022-07-12 13:36:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 13:36:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 13:36:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2022-07-12 13:36:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2022-07-12 13:36:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2022-07-12 13:36:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2022-07-12 13:36:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2022-07-12 13:36:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2022-07-12 13:36:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-07-12 13:36:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-07-12 13:36:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-12 13:36:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-12 13:36:27,108 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-07-12 13:36:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-07-12 13:36:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2022-07-12 13:36:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2022-07-12 13:36:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 13:36:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 13:36:27,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 13:36:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-07-12 13:36:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-07-12 13:36:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 13:36:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-07-12 13:36:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-07-12 13:36:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 13:36:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 13:36:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 13:36:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 13:36:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2022-07-12 13:36:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2022-07-12 13:36:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-07-12 13:36:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-07-12 13:36:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2022-07-12 13:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2022-07-12 13:36:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2022-07-12 13:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2022-07-12 13:36:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-12 13:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-12 13:36:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2022-07-12 13:36:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2022-07-12 13:36:27,091 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 [2022-07-12 13:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 13:36:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 13:36:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2022-07-12 13:36:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2022-07-12 13:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2022-07-12 13:36:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2022-07-12 13:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2022-07-12 13:36:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2022-07-12 13:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2022-07-12 13:36:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2022-07-12 13:36:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2022-07-12 13:36:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2022-07-12 13:36:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 13:36:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 13:36:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-12 13:36:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-12 13:36:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 13:36:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 13:36:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-12 13:36:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-12 13:36:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-12 13:36:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-12 13:36:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 13:36:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 13:36:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2022-07-12 13:36:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2022-07-12 13:36:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 13:36:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 13:36:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2022-07-12 13:36:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2022-07-12 13:36:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-12 13:36:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-12 13:36:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2022-07-12 13:36:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2022-07-12 13:36:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2022-07-12 13:36:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2022-07-12 13:36:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2022-07-12 13:36:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2022-07-12 13:36:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-12 13:36:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-12 13:36:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-07-12 13:36:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-07-12 13:36:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2022-07-12 13:36:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2022-07-12 13:36:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-07-12 13:36:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-07-12 13:36:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 13:36:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 13:36:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2022-07-12 13:36:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2022-07-12 13:36:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 13:36:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 13:36:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-07-12 13:36:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-07-12 13:36:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2022-07-12 13:36:27,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2022-07-12 13:36:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2022-07-12 13:36:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2022-07-12 13:36:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 13:36:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 13:36:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 13:36:27,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 13:36:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 13:36:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 13:36:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2022-07-12 13:36:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2022-07-12 13:36:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-12 13:36:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-12 13:36:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-12 13:36:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-12 13:36:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 13:36:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 13:36:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 13:36:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2022-07-12 13:36:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2022-07-12 13:36:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2022-07-12 13:36:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2022-07-12 13:36:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 13:36:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-12 13:36:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-12 13:36:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2022-07-12 13:36:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2022-07-12 13:36:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 13:36:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2022-07-12 13:36:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2022-07-12 13:36:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-12 13:36:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-12 13:36:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 13:36:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 13:36:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-12 13:36:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-12 13:36:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 13:36:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 13:36:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 13:36:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 13:36:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2022-07-12 13:36:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2022-07-12 13:36:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2022-07-12 13:36:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2022-07-12 13:36:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2022-07-12 13:36:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2022-07-12 13:36:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-12 13:36:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-12 13:36:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2022-07-12 13:36:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2022-07-12 13:36:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-07-12 13:36:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-07-12 13:36:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2022-07-12 13:36:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2022-07-12 13:36:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-12 13:36:27,128 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-12 13:36:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_list_mutex [2022-07-12 13:36:27,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_list_mutex [2022-07-12 13:36:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_list_mutex [2022-07-12 13:36:27,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_list_mutex [2022-07-12 13:36:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-07-12 13:36:27,128 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-07-12 13:36:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2022-07-12 13:36:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2022-07-12 13:36:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-07-12 13:36:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-07-12 13:36:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2022-07-12 13:36:27,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2022-07-12 13:36:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 13:36:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 13:36:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2022-07-12 13:36:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2022-07-12 13:36:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-07-12 13:36:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-07-12 13:36:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 13:36:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2022-07-12 13:36:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2022-07-12 13:36:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 13:36:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 13:36:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2022-07-12 13:36:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2022-07-12 13:36:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2022-07-12 13:36:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2022-07-12 13:36:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-12 13:36:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2022-07-12 13:36:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-07-12 13:36:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2022-07-12 13:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 13:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2022-07-12 13:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2022-07-12 13:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-07-12 13:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-07-12 13:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-07-12 13:36:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-07-12 13:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2022-07-12 13:36:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2022-07-12 13:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2022-07-12 13:36:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2022-07-12 13:36:28,246 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 13:36:28,249 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 13:36:28,391 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 13:36:34,555 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 13:36:34,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 13:36:34,575 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 13:36:34,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:36:34 BoogieIcfgContainer [2022-07-12 13:36:34,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 13:36:34,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 13:36:34,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 13:36:34,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 13:36:34,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:36:21" (1/3) ... [2022-07-12 13:36:34,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38431852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:36:34, skipping insertion in model container [2022-07-12 13:36:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:36:26" (2/3) ... [2022-07-12 13:36:34,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38431852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:36:34, skipping insertion in model container [2022-07-12 13:36:34,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:36:34" (3/3) ... [2022-07-12 13:36:34,588 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 [2022-07-12 13:36:34,601 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 13:36:34,601 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 13:36:34,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 13:36:34,690 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@18127b5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c158587 [2022-07-12 13:36:34,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 13:36:34,701 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) [2022-07-12 13:36:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 13:36:34,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:36:34,718 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] [2022-07-12 13:36:34,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:36:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:36:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash 926087783, now seen corresponding path program 1 times [2022-07-12 13:36:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:36:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269952560] [2022-07-12 13:36:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:36:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:36:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:36:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:36:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:36:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:36:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:36:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:36:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:36:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:36:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269952560] [2022-07-12 13:36:35,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269952560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:36:35,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:36:35,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 13:36:35,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778629875] [2022-07-12 13:36:35,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:36:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 13:36:35,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:36:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 13:36:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 13:36:35,684 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) [2022-07-12 13:36:38,108 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 [] [2022-07-12 13:36:40,137 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 [] [2022-07-12 13:36:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:36:47,453 INFO L93 Difference]: Finished difference Result 5481 states and 8253 transitions. [2022-07-12 13:36:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 13:36:47,456 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 [2022-07-12 13:36:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:36:47,497 INFO L225 Difference]: With dead ends: 5481 [2022-07-12 13:36:47,498 INFO L226 Difference]: Without dead ends: 3105 [2022-07-12 13:36:47,520 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 [2022-07-12 13:36:47,523 INFO L413 NwaCegarLoop]: 3004 mSDtfsCounter, 2714 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 2108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 5730 SdHoareTripleChecker+Invalid, 4420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2108 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-12 13:36:47,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2780 Valid, 5730 Invalid, 4420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2108 Valid, 2310 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-07-12 13:36:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2022-07-12 13:36:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2335. [2022-07-12 13:36:47,693 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) [2022-07-12 13:36:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3293 transitions. [2022-07-12 13:36:47,717 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3293 transitions. Word has length 82 [2022-07-12 13:36:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:36:47,718 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3293 transitions. [2022-07-12 13:36:47,718 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) [2022-07-12 13:36:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3293 transitions. [2022-07-12 13:36:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 13:36:47,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:36:47,728 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] [2022-07-12 13:36:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 13:36:47,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:36:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:36:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash -41262871, now seen corresponding path program 1 times [2022-07-12 13:36:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:36:47,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965944132] [2022-07-12 13:36:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:36:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:36:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:36:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:36:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:36:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:36:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:36:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:36:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:36:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:36:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:36:48,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:36:48,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965944132] [2022-07-12 13:36:48,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965944132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:36:48,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:36:48,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:36:48,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621040890] [2022-07-12 13:36:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:36:48,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:36:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:36:48,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:36:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:36:48,336 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) [2022-07-12 13:36:50,702 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 [] [2022-07-12 13:36:52,727 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 [] [2022-07-12 13:37:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:37:01,167 INFO L93 Difference]: Finished difference Result 3124 states and 4643 transitions. [2022-07-12 13:37:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 13:37:01,168 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 [2022-07-12 13:37:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:37:01,187 INFO L225 Difference]: With dead ends: 3124 [2022-07-12 13:37:01,188 INFO L226 Difference]: Without dead ends: 3120 [2022-07-12 13:37:01,190 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 [2022-07-12 13:37:01,191 INFO L413 NwaCegarLoop]: 2948 mSDtfsCounter, 5460 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 2697 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5796 SdHoareTripleChecker+Valid, 6894 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2697 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-07-12 13:37:01,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5796 Valid, 6894 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2697 Valid, 3157 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-07-12 13:37:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2022-07-12 13:37:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2348. [2022-07-12 13:37:01,293 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) [2022-07-12 13:37:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3299 transitions. [2022-07-12 13:37:01,307 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3299 transitions. Word has length 82 [2022-07-12 13:37:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:37:01,308 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 3299 transitions. [2022-07-12 13:37:01,308 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) [2022-07-12 13:37:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3299 transitions. [2022-07-12 13:37:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 13:37:01,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:37:01,311 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] [2022-07-12 13:37:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 13:37:01,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:37:01,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:37:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1280119528, now seen corresponding path program 1 times [2022-07-12 13:37:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:37:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572105063] [2022-07-12 13:37:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:37:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:37:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:37:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:37:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:37:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:37:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:37:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:37:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:37:01,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:37:01,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572105063] [2022-07-12 13:37:01,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572105063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:37:01,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:37:01,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:37:01,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596816116] [2022-07-12 13:37:01,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:37:01,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:37:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:37:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:37:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:37:01,767 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) [2022-07-12 13:37:04,047 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 [] [2022-07-12 13:37:06,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:10,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:12,170 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 [] [2022-07-12 13:37:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:37:17,647 INFO L93 Difference]: Finished difference Result 3120 states and 4638 transitions. [2022-07-12 13:37:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 13:37:17,647 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 [2022-07-12 13:37:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:37:17,665 INFO L225 Difference]: With dead ends: 3120 [2022-07-12 13:37:17,666 INFO L226 Difference]: Without dead ends: 3117 [2022-07-12 13:37:17,667 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 [2022-07-12 13:37:17,668 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 5513 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 2718 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 5046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2718 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-07-12 13:37:17,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 5742 Invalid, 5046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2718 Valid, 2324 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2022-07-12 13:37:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-07-12 13:37:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2347. [2022-07-12 13:37:17,796 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) [2022-07-12 13:37:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3297 transitions. [2022-07-12 13:37:17,806 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3297 transitions. Word has length 83 [2022-07-12 13:37:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:37:17,807 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 3297 transitions. [2022-07-12 13:37:17,807 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) [2022-07-12 13:37:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3297 transitions. [2022-07-12 13:37:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 13:37:17,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:37:17,811 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] [2022-07-12 13:37:17,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 13:37:17,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:37:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:37:17,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1029965364, now seen corresponding path program 1 times [2022-07-12 13:37:17,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:37:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459015970] [2022-07-12 13:37:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:37:17,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:37:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:37:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:37:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:37:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:37:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:37:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:37:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:37:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:37:18,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459015970] [2022-07-12 13:37:18,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459015970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:37:18,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:37:18,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:37:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755708448] [2022-07-12 13:37:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:37:18,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:37:18,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:37:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:37:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:37:18,206 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) [2022-07-12 13:37:20,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:22,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:37:28,910 INFO L93 Difference]: Finished difference Result 3119 states and 4636 transitions. [2022-07-12 13:37:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 13:37:28,910 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 [2022-07-12 13:37:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:37:28,927 INFO L225 Difference]: With dead ends: 3119 [2022-07-12 13:37:28,928 INFO L226 Difference]: Without dead ends: 3116 [2022-07-12 13:37:28,930 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 [2022-07-12 13:37:28,931 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 5916 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 2877 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 5599 SdHoareTripleChecker+Invalid, 5201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2877 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-12 13:37:28,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 5599 Invalid, 5201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2877 Valid, 2322 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2022-07-12 13:37:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-07-12 13:37:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2346. [2022-07-12 13:37:29,043 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) [2022-07-12 13:37:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3295 transitions. [2022-07-12 13:37:29,053 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3295 transitions. Word has length 84 [2022-07-12 13:37:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:37:29,053 INFO L495 AbstractCegarLoop]: Abstraction has 2346 states and 3295 transitions. [2022-07-12 13:37:29,054 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) [2022-07-12 13:37:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3295 transitions. [2022-07-12 13:37:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 13:37:29,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:37:29,056 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, 1, 1, 1, 1] [2022-07-12 13:37:29,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 13:37:29,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:37:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:37:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash 81815386, now seen corresponding path program 1 times [2022-07-12 13:37:29,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:37:29,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162189403] [2022-07-12 13:37:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:37:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:37:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:37:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:37:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:37:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:37:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:37:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:37:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:37:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:37:29,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162189403] [2022-07-12 13:37:29,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162189403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:37:29,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:37:29,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:37:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028339605] [2022-07-12 13:37:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:37:29,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:37:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:37:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:37:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:37:29,361 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) [2022-07-12 13:37:32,685 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 [] [2022-07-12 13:37:34,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:38,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:40,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:48,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:37:50,288 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 [] [2022-07-12 13:37:53,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:37:53,355 INFO L93 Difference]: Finished difference Result 8053 states and 11743 transitions. [2022-07-12 13:37:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 13:37:53,356 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 [2022-07-12 13:37:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:37:53,385 INFO L225 Difference]: With dead ends: 8053 [2022-07-12 13:37:53,386 INFO L226 Difference]: Without dead ends: 5728 [2022-07-12 13:37:53,397 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 [2022-07-12 13:37:53,398 INFO L413 NwaCegarLoop]: 3298 mSDtfsCounter, 6984 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 4226 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7308 SdHoareTripleChecker+Valid, 8319 SdHoareTripleChecker+Invalid, 9113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4226 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-07-12 13:37:53,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7308 Valid, 8319 Invalid, 9113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4226 Valid, 4881 Invalid, 6 Unknown, 0 Unchecked, 23.5s Time] [2022-07-12 13:37:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2022-07-12 13:37:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 4194. [2022-07-12 13:37:53,633 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) [2022-07-12 13:37:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 5838 transitions. [2022-07-12 13:37:53,652 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 5838 transitions. Word has length 86 [2022-07-12 13:37:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:37:53,652 INFO L495 AbstractCegarLoop]: Abstraction has 4194 states and 5838 transitions. [2022-07-12 13:37:53,653 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) [2022-07-12 13:37:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 5838 transitions. [2022-07-12 13:37:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 13:37:53,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:37:53,654 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] [2022-07-12 13:37:53,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 13:37:53,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:37:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:37:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1865116005, now seen corresponding path program 1 times [2022-07-12 13:37:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:37:53,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879346295] [2022-07-12 13:37:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:37:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:37:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:37:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:37:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:37:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:37:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:37:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:37:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:54,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:37:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:37:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:37:54,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:37:54,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879346295] [2022-07-12 13:37:54,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879346295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:37:54,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:37:54,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:37:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035205311] [2022-07-12 13:37:54,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:37:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:37:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:37:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:37:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:37:54,072 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) [2022-07-12 13:37:57,481 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 [] [2022-07-12 13:37:59,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:38:02,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:38:04,832 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 [] [2022-07-12 13:38:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:38:09,092 INFO L93 Difference]: Finished difference Result 5710 states and 8452 transitions. [2022-07-12 13:38:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 13:38:09,093 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 [2022-07-12 13:38:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:38:09,121 INFO L225 Difference]: With dead ends: 5710 [2022-07-12 13:38:09,121 INFO L226 Difference]: Without dead ends: 5707 [2022-07-12 13:38:09,125 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 [2022-07-12 13:38:09,126 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 5878 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 2840 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6220 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2840 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-07-12 13:38:09,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6220 Valid, 5634 Invalid, 5176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2840 Valid, 2332 Invalid, 4 Unknown, 0 Unchecked, 14.7s Time] [2022-07-12 13:38:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-07-12 13:38:09,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 4193. [2022-07-12 13:38:09,358 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) [2022-07-12 13:38:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 5836 transitions. [2022-07-12 13:38:09,375 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 5836 transitions. Word has length 85 [2022-07-12 13:38:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:38:09,376 INFO L495 AbstractCegarLoop]: Abstraction has 4193 states and 5836 transitions. [2022-07-12 13:38:09,377 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) [2022-07-12 13:38:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 5836 transitions. [2022-07-12 13:38:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 13:38:09,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:38:09,378 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] [2022-07-12 13:38:09,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 13:38:09,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:38:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:38:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1984977233, now seen corresponding path program 1 times [2022-07-12 13:38:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:38:09,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009751796] [2022-07-12 13:38:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:38:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:38:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:38:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:38:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:38:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:38:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:38:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:38:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:38:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:38:09,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009751796] [2022-07-12 13:38:09,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009751796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:38:09,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:38:09,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:38:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415784006] [2022-07-12 13:38:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:38:09,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:38:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:38:09,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:38:09,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:38:09,709 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) [2022-07-12 13:38:14,480 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 [] [2022-07-12 13:38:16,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:38:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:38:22,955 INFO L93 Difference]: Finished difference Result 5729 states and 8463 transitions. [2022-07-12 13:38:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 13:38:22,955 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 [2022-07-12 13:38:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:38:23,027 INFO L225 Difference]: With dead ends: 5729 [2022-07-12 13:38:23,027 INFO L226 Difference]: Without dead ends: 5725 [2022-07-12 13:38:23,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-12 13:38:23,030 INFO L413 NwaCegarLoop]: 2922 mSDtfsCounter, 5427 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 2688 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5750 SdHoareTripleChecker+Valid, 6874 SdHoareTripleChecker+Invalid, 5840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2688 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-07-12 13:38:23,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5750 Valid, 6874 Invalid, 5840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2688 Valid, 3150 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2022-07-12 13:38:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2022-07-12 13:38:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4209. [2022-07-12 13:38:23,250 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) [2022-07-12 13:38:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 5843 transitions. [2022-07-12 13:38:23,266 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 5843 transitions. Word has length 86 [2022-07-12 13:38:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:38:23,266 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 5843 transitions. [2022-07-12 13:38:23,266 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) [2022-07-12 13:38:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 5843 transitions. [2022-07-12 13:38:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 13:38:23,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:38:23,269 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] [2022-07-12 13:38:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 13:38:23,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:38:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:38:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1405703138, now seen corresponding path program 1 times [2022-07-12 13:38:23,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:38:23,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665681562] [2022-07-12 13:38:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:38:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:38:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:38:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:38:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:38:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:38:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:38:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:38:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:38:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:38:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665681562] [2022-07-12 13:38:23,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665681562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:38:23,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:38:23,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 13:38:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626536808] [2022-07-12 13:38:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:38:23,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 13:38:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:38:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 13:38:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 13:38:23,565 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) [2022-07-12 13:38:28,129 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 [] [2022-07-12 13:38:30,158 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 [] [2022-07-12 13:38:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:38:35,708 INFO L93 Difference]: Finished difference Result 6256 states and 9136 transitions. [2022-07-12 13:38:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 13:38:35,708 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 [2022-07-12 13:38:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:38:35,737 INFO L225 Difference]: With dead ends: 6256 [2022-07-12 13:38:35,737 INFO L226 Difference]: Without dead ends: 6236 [2022-07-12 13:38:35,747 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 [2022-07-12 13:38:35,748 INFO L413 NwaCegarLoop]: 2967 mSDtfsCounter, 6074 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 2972 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6422 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 5743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2972 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-12 13:38:35,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6422 Valid, 5743 Invalid, 5743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2972 Valid, 2769 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-07-12 13:38:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2022-07-12 13:38:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 4619. [2022-07-12 13:38:36,064 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) [2022-07-12 13:38:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4619 states to 4619 states and 6333 transitions. [2022-07-12 13:38:36,083 INFO L78 Accepts]: Start accepts. Automaton has 4619 states and 6333 transitions. Word has length 87 [2022-07-12 13:38:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:38:36,083 INFO L495 AbstractCegarLoop]: Abstraction has 4619 states and 6333 transitions. [2022-07-12 13:38:36,083 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) [2022-07-12 13:38:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4619 states and 6333 transitions. [2022-07-12 13:38:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 13:38:36,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:38:36,088 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] [2022-07-12 13:38:36,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 13:38:36,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:38:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:38:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash 244158121, now seen corresponding path program 1 times [2022-07-12 13:38:36,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:38:36,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471112747] [2022-07-12 13:38:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:38:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:38:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:38:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:38:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:38:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:38:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:38:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:38:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 13:38:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 13:38:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 13:38:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 13:38:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 13:38:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:38:36,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471112747] [2022-07-12 13:38:36,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471112747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:38:36,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:38:36,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 13:38:36,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296282766] [2022-07-12 13:38:36,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:38:36,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 13:38:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:38:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 13:38:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 13:38:36,482 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) [2022-07-12 13:38:42,042 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 [] [2022-07-12 13:38:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:38:48,809 INFO L93 Difference]: Finished difference Result 6881 states and 10204 transitions. [2022-07-12 13:38:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 13:38:48,810 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 [2022-07-12 13:38:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:38:48,842 INFO L225 Difference]: With dead ends: 6881 [2022-07-12 13:38:48,843 INFO L226 Difference]: Without dead ends: 6860 [2022-07-12 13:38:48,850 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 [2022-07-12 13:38:48,851 INFO L413 NwaCegarLoop]: 2715 mSDtfsCounter, 5712 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 5310 mSolverCounterSat, 4567 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5994 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 9878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4567 IncrementalHoareTripleChecker+Valid, 5310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-12 13:38:48,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5994 Valid, 5532 Invalid, 9878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4567 Valid, 5310 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2022-07-12 13:38:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2022-07-12 13:38:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 4600. [2022-07-12 13:38:49,124 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) [2022-07-12 13:38:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6302 transitions. [2022-07-12 13:38:49,142 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6302 transitions. Word has length 106 [2022-07-12 13:38:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:38:49,142 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6302 transitions. [2022-07-12 13:38:49,142 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) [2022-07-12 13:38:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6302 transitions. [2022-07-12 13:38:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 13:38:49,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:38:49,155 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] [2022-07-12 13:38:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 13:38:49,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:38:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:38:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1315434094, now seen corresponding path program 1 times [2022-07-12 13:38:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:38:49,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273546026] [2022-07-12 13:38:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:38:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:38:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:38:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:38:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:38:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:38:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:38:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:38:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:38:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 13:38:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 13:38:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 13:38:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 13:38:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 13:38:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 13:38:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 13:38:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 13:38:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 13:38:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 13:38:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 13:38:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 13:38:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:38:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 13:38:49,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:38:49,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273546026] [2022-07-12 13:38:49,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273546026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:38:49,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 13:38:49,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 13:38:49,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903905960] [2022-07-12 13:38:49,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:38:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 13:38:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:38:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 13:38:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 13:38:49,705 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) [2022-07-12 13:38:56,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:39:06,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 13:39:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:39:07,559 INFO L93 Difference]: Finished difference Result 6921 states and 10233 transitions. [2022-07-12 13:39:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 13:39:07,560 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 [2022-07-12 13:39:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:39:07,592 INFO L225 Difference]: With dead ends: 6921 [2022-07-12 13:39:07,592 INFO L226 Difference]: Without dead ends: 6918 [2022-07-12 13:39:07,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-07-12 13:39:07,598 INFO L413 NwaCegarLoop]: 2766 mSDtfsCounter, 7490 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 8495 mSolverCounterSat, 5795 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7607 SdHoareTripleChecker+Valid, 5396 SdHoareTripleChecker+Invalid, 14292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5795 IncrementalHoareTripleChecker+Valid, 8495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-07-12 13:39:07,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7607 Valid, 5396 Invalid, 14292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5795 Valid, 8495 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2022-07-12 13:39:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2022-07-12 13:39:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 4599. [2022-07-12 13:39:07,876 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) [2022-07-12 13:39:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6299 transitions. [2022-07-12 13:39:07,894 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6299 transitions. Word has length 169 [2022-07-12 13:39:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:39:07,894 INFO L495 AbstractCegarLoop]: Abstraction has 4599 states and 6299 transitions. [2022-07-12 13:39:07,894 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) [2022-07-12 13:39:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6299 transitions. [2022-07-12 13:39:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 13:39:07,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 13:39:07,912 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] [2022-07-12 13:39:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 13:39:07,913 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 13:39:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 13:39:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 402287534, now seen corresponding path program 1 times [2022-07-12 13:39:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 13:39:07,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911912821] [2022-07-12 13:39:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:39:07,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 13:39:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 13:39:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:39:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 13:39:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 13:39:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:39:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 13:39:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:39:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 13:39:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:39:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 13:39:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 13:39:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 13:39:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 13:39:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 13:39:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 13:39:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 13:39:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 13:39:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 13:39:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 13:39:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 13:39:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 13:39:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 13:39:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 13:39:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 13:39:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 13:39:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 13:39:08,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 13:39:08,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911912821] [2022-07-12 13:39:08,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911912821] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 13:39:08,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136923531] [2022-07-12 13:39:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 13:39:08,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 13:39:08,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 13:39:08,652 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) [2022-07-12 13:39:08,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 13:39:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 13:39:09,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 13:39:09,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 13:39:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-12 13:39:09,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 13:39:09,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136923531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 13:39:09,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 13:39:09,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-12 13:39:09,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720231635] [2022-07-12 13:39:09,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 13:39:09,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 13:39:09,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 13:39:09,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 13:39:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 13:39:09,727 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) [2022-07-12 13:39:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 13:39:09,991 INFO L93 Difference]: Finished difference Result 4599 states and 6299 transitions. [2022-07-12 13:39:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 13:39:09,992 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 [2022-07-12 13:39:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 13:39:09,995 INFO L225 Difference]: With dead ends: 4599 [2022-07-12 13:39:09,995 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 13:39:10,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 13:39:10,011 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 13:39:10,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 6414 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 13:39:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 13:39:10,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 13:39:10,012 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) [2022-07-12 13:39:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 13:39:10,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2022-07-12 13:39:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 13:39:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 13:39:10,015 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) [2022-07-12 13:39:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 13:39:10,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 13:39:10,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 13:39:10,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 13:39:10,243 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 [2022-07-12 13:39:10,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 13:39:21,032 WARN L233 SmtUtils]: Spent 10.77s 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) [2022-07-12 13:39:31,514 WARN L233 SmtUtils]: Spent 10.48s 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) [2022-07-12 13:39:41,850 WARN L233 SmtUtils]: Spent 10.33s 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) [2022-07-12 13:39:52,531 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) [2022-07-12 13:40:03,356 WARN L233 SmtUtils]: Spent 10.82s 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) [2022-07-12 13:40:13,883 WARN L233 SmtUtils]: Spent 10.53s 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) [2022-07-12 13:40:24,791 WARN L233 SmtUtils]: Spent 10.90s 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)