./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:50,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:50,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:50,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:50,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:50,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:50,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:50,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:50,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:50,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:50,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:50,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:50,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:50,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:50,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:50,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:50,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:50,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:50,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:50,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:50,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:50,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:50,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:50,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:50,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:50,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:50,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:50,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:50,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:50,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:50,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:50,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:50,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:50,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:50,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:50,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:50,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:50,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:50,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:50,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:50,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:50,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:12:50,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:50,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:50,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:50,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:50,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:50,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:50,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:50,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:50,441 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:50,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:50,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:50,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:50,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:50,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:50,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:50,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:50,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:50,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:50,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:50,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:50,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:50,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:50,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:50,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:50,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:50,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:50,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:50,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:50,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:50,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:50,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57db9f03a5170fd6970a4ac4989029ee35a0e85ad6a1c5337395bb7ff185d1b [2022-11-20 11:12:50,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:50,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:50,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:50,753 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:50,753 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:50,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/../../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 [2022-11-20 11:12:53,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:54,513 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:54,513 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/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 [2022-11-20 11:12:54,564 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/data/000d20c19/bf0dd98f90854b33839115ca4b69235d/FLAG32ae17e51 [2022-11-20 11:12:54,580 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/data/000d20c19/bf0dd98f90854b33839115ca4b69235d [2022-11-20 11:12:54,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:54,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:54,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:54,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:54,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:54,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2022-11-20 11:12:54,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6d4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54, skipping insertion in model container [2022-11-20 11:12:54,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2022-11-20 11:12:54,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:54,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:58,673 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/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] [2022-11-20 11:12:59,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:59,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:59,755 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/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] [2022-11-20 11:12:59,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:59,920 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:59,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59 WrapperNode [2022-11-20 11:12:59,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:59,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:59,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:59,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:59,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,410 INFO L138 Inliner]: procedures = 483, calls = 2841, calls flagged for inlining = 237, calls inlined = 184, statements flattened = 6850 [2022-11-20 11:13:00,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:13:00,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:13:00,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:13:00,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:13:00,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:13:00,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:13:00,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:13:00,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:13:00,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (1/1) ... [2022-11-20 11:13:00,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:13:00,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:00,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:13:00,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:13:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure ib_wc_status_msg [2022-11-20 11:13:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_wc_status_msg [2022-11-20 11:13:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 11:13:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 11:13:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure isert_setup_id [2022-11-20 11:13:00,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_setup_id [2022-11-20 11:13:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:13:00,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:13:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-11-20 11:13:00,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_isert_conn [2022-11-20 11:13:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-20 11:13:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-20 11:13:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-20 11:13:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-20 11:13:00,883 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_stop_dataout_timer [2022-11-20 11:13:00,883 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_stop_dataout_timer [2022-11-20 11:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure rdma_destroy_id [2022-11-20 11:13:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rdma_destroy_id [2022-11-20 11:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:13:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-20 11:13:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure isert_cq_work [2022-11-20 11:13:00,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_cq_work [2022-11-20 11:13:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 11:13:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 11:13:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_recv [2022-11-20 11:13:00,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_recv [2022-11-20 11:13:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_device [2022-11-20 11:13:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_device [2022-11-20 11:13:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 11:13:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 11:13:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-11-20 11:13:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_isert_conn [2022-11-20 11:13:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_unmap_single [2022-11-20 11:13:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_unmap_single [2022-11-20 11:13:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_send_wr [2022-11-20 11:13:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_send_wr [2022-11-20 11:13:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-11-20 11:13:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_np_accept_mutex_of_isert_np [2022-11-20 11:13:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 11:13:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 11:13:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 11:13:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 11:13:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-11-20 11:13:00,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_np_accept_mutex_of_isert_np [2022-11-20 11:13:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:13:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_address [2022-11-20 11:13:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_address [2022-11-20 11:13:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait_conn [2022-11-20 11:13:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait_conn [2022-11-20 11:13:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-20 11:13:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u64~0~X~int~X~int~TO~VOID [2022-11-20 11:13:00,892 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 11:13:00,892 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 11:13:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 11:13:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 11:13:00,893 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_map_single [2022-11-20 11:13:00,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_map_single [2022-11-20 11:13:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 11:13:00,894 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_terminate [2022-11-20 11:13:00,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_terminate [2022-11-20 11:13:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 11:13:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 11:13:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:13:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure isert_prot_cmd [2022-11-20 11:13:00,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_prot_cmd [2022-11-20 11:13:00,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:13:00,896 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 11:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 11:13:00,896 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_interruptible [2022-11-20 11:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_interruptible [2022-11-20 11:13:00,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 11:13:00,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 11:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure isert_release_work [2022-11-20 11:13:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_release_work [2022-11-20 11:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_np [2022-11-20 11:13:00,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_np [2022-11-20 11:13:00,897 INFO L130 BoogieDeclarations]: Found specification of procedure isert_comp_put [2022-11-20 11:13:00,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_comp_put [2022-11-20 11:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 11:13:00,898 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 11:13:00,898 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 11:13:00,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 11:13:00,899 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2022-11-20 11:13:00,899 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2022-11-20 11:13:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_from_buffer [2022-11-20 11:13:00,900 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_from_buffer [2022-11-20 11:13:00,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 11:13:00,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 11:13:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:13:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2022-11-20 11:13:00,901 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2022-11-20 11:13:00,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:13:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2022-11-20 11:13:00,902 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2022-11-20 11:13:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:13:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 11:13:00,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:13:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 11:13:00,903 INFO L130 BoogieDeclarations]: Found specification of procedure isert_completion_put [2022-11-20 11:13:00,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_completion_put [2022-11-20 11:13:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-20 11:13:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-20 11:13:00,904 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_data_buf [2022-11-20 11:13:00,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_data_buf [2022-11-20 11:13:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure isert_inv_rkey [2022-11-20 11:13:00,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_inv_rkey [2022-11-20 11:13:00,905 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 11:13:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 11:13:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_sync_single_for_cpu [2022-11-20 11:13:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_sync_single_for_cpu [2022-11-20 11:13:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 11:13:00,906 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 11:13:00,906 INFO L130 BoogieDeclarations]: Found specification of procedure isert_allocate_cmd [2022-11-20 11:13:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_allocate_cmd [2022-11-20 11:13:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure isert_do_control_comp [2022-11-20 11:13:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_do_control_comp [2022-11-20 11:13:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_conn [2022-11-20 11:13:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_conn [2022-11-20 11:13:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure isert_connect_release [2022-11-20 11:13:00,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_connect_release [2022-11-20 11:13:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_comps [2022-11-20 11:13:00,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_comps [2022-11-20 11:13:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:13:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:13:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 11:13:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 11:13:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 11:13:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 11:13:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-20 11:13:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-20 11:13:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 11:13:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 11:13:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 11:13:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:13:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure isert_device_put [2022-11-20 11:13:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_device_put [2022-11-20 11:13:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 11:13:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 11:13:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure isert_map_data_buf [2022-11-20 11:13:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_map_data_buf [2022-11-20 11:13:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-20 11:13:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-20 11:13:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_conn [2022-11-20 11:13:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_conn [2022-11-20 11:13:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure ib_post_send [2022-11-20 11:13:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_post_send [2022-11-20 11:13:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure isert_init_tx_hdrs [2022-11-20 11:13:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_init_tx_hdrs [2022-11-20 11:13:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-20 11:13:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-20 11:13:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-20 11:13:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-20 11:13:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure ib_free_fast_reg_page_list [2022-11-20 11:13:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_free_fast_reg_page_list [2022-11-20 11:13:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-20 11:13:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-20 11:13:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 11:13:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 11:13:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure isert_aborted_task [2022-11-20 11:13:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_aborted_task [2022-11-20 11:13:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 11:13:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 11:13:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-20 11:13:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-20 11:13:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_response [2022-11-20 11:13:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_response [2022-11-20 11:13:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure isert_wait4flush [2022-11-20 11:13:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_wait4flush [2022-11-20 11:13:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 11:13:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 11:13:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:13:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:13:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-20 11:13:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-20 11:13:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure isert_free_login_buf [2022-11-20 11:13:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_free_login_buf [2022-11-20 11:13:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-20 11:13:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-20 11:13:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-20 11:13:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-20 11:13:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:13:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 11:13:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 11:13:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_priv_cmd [2022-11-20 11:13:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_priv_cmd [2022-11-20 11:13:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure isert_put_nopin [2022-11-20 11:13:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_put_nopin [2022-11-20 11:13:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:13:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-20 11:13:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-20 11:13:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_rdma [2022-11-20 11:13:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_rdma [2022-11-20 11:13:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:13:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_recv [2022-11-20 11:13:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_recv [2022-11-20 11:13:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 11:13:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 11:13:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 11:13:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 11:13:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 11:13:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 11:13:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 11:13:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 11:13:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 11:13:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 11:13:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rdma_post_recvl [2022-11-20 11:13:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rdma_post_recvl [2022-11-20 11:13:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure isert_conn_free_fastreg_pool [2022-11-20 11:13:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_conn_free_fastreg_pool [2022-11-20 11:13:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure transport_send_check_condition_and_sense [2022-11-20 11:13:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_send_check_condition_and_sense [2022-11-20 11:13:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 11:13:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 11:13:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure isert_reg_sig_mr [2022-11-20 11:13:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_reg_sig_mr [2022-11-20 11:13:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure transport_generic_free_cmd [2022-11-20 11:13:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure transport_generic_free_cmd [2022-11-20 11:13:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure isert_unmap_tx_desc [2022-11-20 11:13:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_unmap_tx_desc [2022-11-20 11:13:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 11:13:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 11:13:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_device_list_mutex [2022-11-20 11:13:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_device_list_mutex [2022-11-20 11:13:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_device_list_mutex [2022-11-20 11:13:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_device_list_mutex [2022-11-20 11:13:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-20 11:13:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-20 11:13:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure isert_handle_prot_cmd [2022-11-20 11:13:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_handle_prot_cmd [2022-11-20 11:13:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dereg_mr [2022-11-20 11:13:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dereg_mr [2022-11-20 11:13:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure ib_req_notify_cq [2022-11-20 11:13:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_req_notify_cq [2022-11-20 11:13:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 11:13:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 11:13:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure isert_check_pi_status [2022-11-20 11:13:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_check_pi_status [2022-11-20 11:13:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-20 11:13:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-20 11:13:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:13:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure isert_create_send_desc [2022-11-20 11:13:00,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_create_send_desc [2022-11-20 11:13:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 11:13:00,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 11:13:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ib_sg_dma_len [2022-11-20 11:13:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_sg_dma_len [2022-11-20 11:13:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure isert_fast_reg_mr [2022-11-20 11:13:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_fast_reg_mr [2022-11-20 11:13:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 11:13:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 11:13:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-20 11:13:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-20 11:13:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure isert_post_response [2022-11-20 11:13:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_post_response [2022-11-20 11:13:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_mr [2022-11-20 11:13:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_mr [2022-11-20 11:13:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-20 11:13:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-20 11:13:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure isert_rx_login_req [2022-11-20 11:13:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_rx_login_req [2022-11-20 11:13:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-20 11:13:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-20 11:13:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dma_mapping_error [2022-11-20 11:13:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dma_mapping_error [2022-11-20 11:13:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:13:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 11:13:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 11:13:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure target_put_sess_cmd [2022-11-20 11:13:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure target_put_sess_cmd [2022-11-20 11:13:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure isert_set_dif_domain [2022-11-20 11:13:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isert_set_dif_domain [2022-11-20 11:13:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-20 11:13:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-20 11:13:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure ib_dealloc_pd [2022-11-20 11:13:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_dealloc_pd [2022-11-20 11:13:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure ib_alloc_fast_reg_page_list [2022-11-20 11:13:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_alloc_fast_reg_page_list [2022-11-20 11:13:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure iscsit_build_rsp_pdu [2022-11-20 11:13:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure iscsit_build_rsp_pdu [2022-11-20 11:13:02,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:13:02,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:13:02,341 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 11:13:10,268 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:13:10,288 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:13:10,289 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:13:10,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:10 BoogieIcfgContainer [2022-11-20 11:13:10,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:13:10,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:13:10,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:13:10,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:13:10,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:54" (1/3) ... [2022-11-20 11:13:10,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520825f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:10, skipping insertion in model container [2022-11-20 11:13:10,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:59" (2/3) ... [2022-11-20 11:13:10,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520825f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:10, skipping insertion in model container [2022-11-20 11:13:10,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:10" (3/3) ... [2022-11-20 11:13:10,302 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--infiniband--ulp--isert--ib_isert.ko-entry_point.cil.out.i [2022-11-20 11:13:10,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:13:10,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:13:10,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:13:10,419 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c8c30d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:13:10,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:13:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 2303 states, 1581 states have (on average 1.3238456672991776) internal successors, (2093), 1641 states have internal predecessors, (2093), 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) [2022-11-20 11:13:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:13:10,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:10,448 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] [2022-11-20 11:13:10,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1060256498, now seen corresponding path program 1 times [2022-11-20 11:13:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:10,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835057728] [2022-11-20 11:13:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:13:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:13:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:13:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:13:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:13:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:13:11,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:11,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835057728] [2022-11-20 11:13:11,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835057728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:11,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:11,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:13:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892791884] [2022-11-20 11:13:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:13:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:13:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:13:11,553 INFO L87 Difference]: Start difference. First operand has 2303 states, 1581 states have (on average 1.3238456672991776) internal successors, (2093), 1641 states have internal predecessors, (2093), 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) [2022-11-20 11:13:14,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:16,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:27,241 INFO L93 Difference]: Finished difference Result 5351 states and 8031 transitions. [2022-11-20 11:13:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:13:27,243 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 [2022-11-20 11:13:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:27,287 INFO L225 Difference]: With dead ends: 5351 [2022-11-20 11:13:27,287 INFO L226 Difference]: Without dead ends: 3030 [2022-11-20 11:13:27,315 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 [2022-11-20 11:13:27,318 INFO L413 NwaCegarLoop]: 2401 mSDtfsCounter, 2679 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 2082 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2748 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 4900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2082 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:27,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2748 Valid, 5007 Invalid, 4900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2082 Valid, 2816 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2022-11-20 11:13:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-11-20 11:13:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2280. [2022-11-20 11:13:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1566 states have (on average 1.3148148148148149) internal successors, (2059), 1618 states have internal predecessors, (2059), 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) [2022-11-20 11:13:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3215 transitions. [2022-11-20 11:13:27,668 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3215 transitions. Word has length 82 [2022-11-20 11:13:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:27,669 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3215 transitions. [2022-11-20 11:13:27,669 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) [2022-11-20 11:13:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3215 transitions. [2022-11-20 11:13:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 11:13:27,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:27,682 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] [2022-11-20 11:13:27,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:13:27,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 92905844, now seen corresponding path program 1 times [2022-11-20 11:13:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:27,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832441053] [2022-11-20 11:13:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:13:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:13:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:13:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:13:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:13:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:13:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:28,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832441053] [2022-11-20 11:13:28,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832441053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:28,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:28,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:13:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489160239] [2022-11-20 11:13:28,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:28,467 INFO L87 Difference]: Start difference. First operand 2280 states and 3215 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) [2022-11-20 11:13:30,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:39,771 INFO L93 Difference]: Finished difference Result 3049 states and 4537 transitions. [2022-11-20 11:13:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:13:39,772 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 [2022-11-20 11:13:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:39,793 INFO L225 Difference]: With dead ends: 3049 [2022-11-20 11:13:39,793 INFO L226 Difference]: Without dead ends: 3045 [2022-11-20 11:13:39,796 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 [2022-11-20 11:13:39,797 INFO L413 NwaCegarLoop]: 2356 mSDtfsCounter, 6720 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 3686 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7056 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 5815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3686 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:39,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7056 Valid, 3883 Invalid, 5815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3686 Valid, 2128 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-20 11:13:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-20 11:13:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2293. [2022-11-20 11:13:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 1576 states have (on average 1.3115482233502538) internal successors, (2067), 1626 states have internal predecessors, (2067), 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) [2022-11-20 11:13:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3221 transitions. [2022-11-20 11:13:40,005 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3221 transitions. Word has length 82 [2022-11-20 11:13:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:40,007 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3221 transitions. [2022-11-20 11:13:40,008 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) [2022-11-20 11:13:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3221 transitions. [2022-11-20 11:13:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:13:40,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:40,012 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] [2022-11-20 11:13:40,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:13:40,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:40,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1415861714, now seen corresponding path program 1 times [2022-11-20 11:13:40,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:40,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406188559] [2022-11-20 11:13:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:13:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:13:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:13:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:13:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:13:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:13:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406188559] [2022-11-20 11:13:40,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406188559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:40,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:40,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:13:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376539417] [2022-11-20 11:13:40,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:40,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:40,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:40,631 INFO L87 Difference]: Start difference. First operand 2293 states and 3221 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) [2022-11-20 11:13:43,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:45,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:13:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:55,540 INFO L93 Difference]: Finished difference Result 3045 states and 4532 transitions. [2022-11-20 11:13:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:13:55,541 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 [2022-11-20 11:13:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:55,562 INFO L225 Difference]: With dead ends: 3045 [2022-11-20 11:13:55,562 INFO L226 Difference]: Without dead ends: 3042 [2022-11-20 11:13:55,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:13:55,566 INFO L413 NwaCegarLoop]: 2328 mSDtfsCounter, 5831 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 2778 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6173 SdHoareTripleChecker+Valid, 4889 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2778 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:55,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6173 Valid, 4889 Invalid, 5627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2778 Valid, 2847 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2022-11-20 11:13:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2022-11-20 11:13:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2292. [2022-11-20 11:13:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 1576 states have (on average 1.3109137055837563) internal successors, (2066), 1625 states have internal predecessors, (2066), 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) [2022-11-20 11:13:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3219 transitions. [2022-11-20 11:13:55,734 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3219 transitions. Word has length 83 [2022-11-20 11:13:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:55,735 INFO L495 AbstractCegarLoop]: Abstraction has 2292 states and 3219 transitions. [2022-11-20 11:13:55,735 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) [2022-11-20 11:13:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3219 transitions. [2022-11-20 11:13:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 11:13:55,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:55,737 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] [2022-11-20 11:13:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:13:55,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -943010889, now seen corresponding path program 1 times [2022-11-20 11:13:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359420115] [2022-11-20 11:13:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:13:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:13:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:13:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:13:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:13:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:13:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:13:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:13:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:56,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359420115] [2022-11-20 11:13:56,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359420115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:56,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:56,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:13:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919904309] [2022-11-20 11:13:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:13:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:13:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:13:56,347 INFO L87 Difference]: Start difference. First operand 2292 states and 3219 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) [2022-11-20 11:13:58,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:06,828 INFO L93 Difference]: Finished difference Result 3044 states and 4530 transitions. [2022-11-20 11:14:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:14:06,836 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 [2022-11-20 11:14:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:06,859 INFO L225 Difference]: With dead ends: 3044 [2022-11-20 11:14:06,859 INFO L226 Difference]: Without dead ends: 3041 [2022-11-20 11:14:06,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:06,864 INFO L413 NwaCegarLoop]: 2348 mSDtfsCounter, 6718 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 3680 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7060 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 5770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3680 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:06,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7060 Valid, 3849 Invalid, 5770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3680 Valid, 2089 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2022-11-20 11:14:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2022-11-20 11:14:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2291. [2022-11-20 11:14:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1576 states have (on average 1.3102791878172588) internal successors, (2065), 1624 states have internal predecessors, (2065), 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) [2022-11-20 11:14:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3217 transitions. [2022-11-20 11:14:07,044 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3217 transitions. Word has length 84 [2022-11-20 11:14:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:07,044 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3217 transitions. [2022-11-20 11:14:07,044 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) [2022-11-20 11:14:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3217 transitions. [2022-11-20 11:14:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:14:07,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:07,052 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] [2022-11-20 11:14:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:14:07,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 161109728, now seen corresponding path program 1 times [2022-11-20 11:14:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:07,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783692847] [2022-11-20 11:14:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:14:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:14:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:14:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:14:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:14:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:14:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783692847] [2022-11-20 11:14:07,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783692847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:07,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:07,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:14:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956733227] [2022-11-20 11:14:07,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:07,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:07,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:07,509 INFO L87 Difference]: Start difference. First operand 2291 states and 3217 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) [2022-11-20 11:14:14,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:16,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:18,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:21,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:33,951 INFO L93 Difference]: Finished difference Result 7848 states and 11452 transitions. [2022-11-20 11:14:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:33,952 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 [2022-11-20 11:14:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:33,987 INFO L225 Difference]: With dead ends: 7848 [2022-11-20 11:14:33,987 INFO L226 Difference]: Without dead ends: 5578 [2022-11-20 11:14:34,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:14:34,001 INFO L413 NwaCegarLoop]: 2680 mSDtfsCounter, 6881 mSDsluCounter, 5893 mSDsCounter, 0 mSdLazyCounter, 6562 mSolverCounterSat, 4104 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7197 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 10669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4104 IncrementalHoareTripleChecker+Valid, 6562 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:34,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7197 Valid, 8573 Invalid, 10669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4104 Valid, 6562 Invalid, 3 Unknown, 0 Unchecked, 25.7s Time] [2022-11-20 11:14:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5578 states. [2022-11-20 11:14:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5578 to 4084. [2022-11-20 11:14:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 2820 states have (on average 1.3067375886524824) internal successors, (3685), 2908 states have internal predecessors, (3685), 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) [2022-11-20 11:14:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5681 transitions. [2022-11-20 11:14:34,453 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5681 transitions. Word has length 86 [2022-11-20 11:14:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:34,454 INFO L495 AbstractCegarLoop]: Abstraction has 4084 states and 5681 transitions. [2022-11-20 11:14:34,455 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) [2022-11-20 11:14:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5681 transitions. [2022-11-20 11:14:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:14:34,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:34,457 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] [2022-11-20 11:14:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:14:34,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 830467665, now seen corresponding path program 1 times [2022-11-20 11:14:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126403504] [2022-11-20 11:14:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:14:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:14:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:14:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:14:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:14:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:14:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:34,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126403504] [2022-11-20 11:14:34,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126403504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:34,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:34,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:14:34,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096102408] [2022-11-20 11:14:34,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:34,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:34,966 INFO L87 Difference]: Start difference. First operand 4084 states and 5681 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) [2022-11-20 11:14:41,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:43,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:14:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:51,664 INFO L93 Difference]: Finished difference Result 5560 states and 8239 transitions. [2022-11-20 11:14:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:14:51,664 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 [2022-11-20 11:14:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:51,694 INFO L225 Difference]: With dead ends: 5560 [2022-11-20 11:14:51,694 INFO L226 Difference]: Without dead ends: 5557 [2022-11-20 11:14:51,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:14:51,698 INFO L413 NwaCegarLoop]: 2337 mSDtfsCounter, 5410 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 2607 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5755 SdHoareTripleChecker+Valid, 6085 SdHoareTripleChecker+Invalid, 6224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2607 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:51,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5755 Valid, 6085 Invalid, 6224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2607 Valid, 3615 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-11-20 11:14:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2022-11-20 11:14:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4083. [2022-11-20 11:14:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 2820 states have (on average 1.3063829787234043) internal successors, (3684), 2907 states have internal predecessors, (3684), 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) [2022-11-20 11:14:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 5679 transitions. [2022-11-20 11:14:52,084 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 5679 transitions. Word has length 85 [2022-11-20 11:14:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:52,085 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 5679 transitions. [2022-11-20 11:14:52,085 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) [2022-11-20 11:14:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 5679 transitions. [2022-11-20 11:14:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 11:14:52,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:52,087 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] [2022-11-20 11:14:52,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:14:52,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:14:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash -26267142, now seen corresponding path program 1 times [2022-11-20 11:14:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995441389] [2022-11-20 11:14:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:14:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:14:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:14:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:14:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:14:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:14:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:14:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:14:52,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:52,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995441389] [2022-11-20 11:14:52,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995441389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:52,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:52,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:14:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978153572] [2022-11-20 11:14:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:14:52,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:14:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:14:52,623 INFO L87 Difference]: Start difference. First operand 4083 states and 5679 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) [2022-11-20 11:14:58,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:03,756 INFO L93 Difference]: Finished difference Result 5579 states and 8250 transitions. [2022-11-20 11:15:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:15:03,756 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 [2022-11-20 11:15:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:03,788 INFO L225 Difference]: With dead ends: 5579 [2022-11-20 11:15:03,788 INFO L226 Difference]: Without dead ends: 5575 [2022-11-20 11:15:03,792 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 [2022-11-20 11:15:03,792 INFO L413 NwaCegarLoop]: 2357 mSDtfsCounter, 6661 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 3653 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6982 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 5772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3653 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:03,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6982 Valid, 3885 Invalid, 5772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3653 Valid, 2118 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-20 11:15:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2022-11-20 11:15:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 4099. [2022-11-20 11:15:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 2832 states have (on average 1.3040254237288136) internal successors, (3693), 2917 states have internal predecessors, (3693), 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) [2022-11-20 11:15:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5686 transitions. [2022-11-20 11:15:04,165 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5686 transitions. Word has length 86 [2022-11-20 11:15:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:04,166 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 5686 transitions. [2022-11-20 11:15:04,166 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) [2022-11-20 11:15:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5686 transitions. [2022-11-20 11:15:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:15:04,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:04,168 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] [2022-11-20 11:15:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:15:04,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash -815237516, now seen corresponding path program 1 times [2022-11-20 11:15:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:04,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766491368] [2022-11-20 11:15:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:15:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:15:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:15:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:15:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:15:04,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:04,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766491368] [2022-11-20 11:15:04,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766491368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:04,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:04,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:15:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120943964] [2022-11-20 11:15:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:15:04,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:15:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:15:04,708 INFO L87 Difference]: Start difference. First operand 4099 states and 5686 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) [2022-11-20 11:15:11,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:13,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:15,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:24,451 INFO L93 Difference]: Finished difference Result 6106 states and 8923 transitions. [2022-11-20 11:15:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:15:24,452 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 [2022-11-20 11:15:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:24,484 INFO L225 Difference]: With dead ends: 6106 [2022-11-20 11:15:24,484 INFO L226 Difference]: Without dead ends: 6086 [2022-11-20 11:15:24,492 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 [2022-11-20 11:15:24,493 INFO L413 NwaCegarLoop]: 2371 mSDtfsCounter, 5590 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 2713 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5935 SdHoareTripleChecker+Valid, 6202 SdHoareTripleChecker+Invalid, 6790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2713 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:24,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5935 Valid, 6202 Invalid, 6790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2713 Valid, 4074 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2022-11-20 11:15:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2022-11-20 11:15:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4509. [2022-11-20 11:15:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 3103 states have (on average 1.29326458266194) internal successors, (4013), 3193 states have internal predecessors, (4013), 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) [2022-11-20 11:15:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6176 transitions. [2022-11-20 11:15:25,033 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6176 transitions. Word has length 87 [2022-11-20 11:15:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:25,034 INFO L495 AbstractCegarLoop]: Abstraction has 4509 states and 6176 transitions. [2022-11-20 11:15:25,035 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) [2022-11-20 11:15:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6176 transitions. [2022-11-20 11:15:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:15:25,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:25,038 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, 1] [2022-11-20 11:15:25,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:15:25,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1202509481, now seen corresponding path program 1 times [2022-11-20 11:15:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:25,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663594711] [2022-11-20 11:15:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:25,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:15:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:15:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:15:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:15:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:15:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:15:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:15:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 11:15:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:15:25,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663594711] [2022-11-20 11:15:25,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663594711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:25,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:25,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:15:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538031098] [2022-11-20 11:15:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:25,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:15:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:15:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:15:25,731 INFO L87 Difference]: Start difference. First operand 4509 states and 6176 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-20 11:15:34,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:36,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:15:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:48,139 INFO L93 Difference]: Finished difference Result 6705 states and 9957 transitions. [2022-11-20 11:15:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:15:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 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 107 [2022-11-20 11:15:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:48,185 INFO L225 Difference]: With dead ends: 6705 [2022-11-20 11:15:48,185 INFO L226 Difference]: Without dead ends: 6684 [2022-11-20 11:15:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:15:48,196 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 4853 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 7689 mSolverCounterSat, 3298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5136 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 10989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3298 IncrementalHoareTripleChecker+Valid, 7689 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:48,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5136 Valid, 4852 Invalid, 10989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3298 Valid, 7689 Invalid, 2 Unknown, 0 Unchecked, 21.3s Time] [2022-11-20 11:15:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6684 states. [2022-11-20 11:15:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6684 to 4490. [2022-11-20 11:15:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3095 states have (on average 1.292730210016155) internal successors, (4001), 3182 states have internal predecessors, (4001), 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) [2022-11-20 11:15:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6145 transitions. [2022-11-20 11:15:48,724 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6145 transitions. Word has length 107 [2022-11-20 11:15:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:48,724 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 6145 transitions. [2022-11-20 11:15:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-20 11:15:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6145 transitions. [2022-11-20 11:15:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-20 11:15:48,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:48,738 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, 1] [2022-11-20 11:15:48,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:15:48,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash -608508342, now seen corresponding path program 1 times [2022-11-20 11:15:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:48,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673592810] [2022-11-20 11:15:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:15:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:15:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:15:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:15:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:15:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 11:15:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:15:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 11:15:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 11:15:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 11:15:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 11:15:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:15:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 11:15:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-20 11:15:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:15:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 11:15:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 11:15:50,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:50,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673592810] [2022-11-20 11:15:50,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673592810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:15:50,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974613169] [2022-11-20 11:15:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:50,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:15:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:15:50,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:15:50,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:15:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:51,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:15:51,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 11:15:51,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:15:51,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974613169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:51,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:15:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-20 11:15:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426536211] [2022-11-20 11:15:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:15:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:15:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:15:51,854 INFO L87 Difference]: Start difference. First operand 4490 states and 6145 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 4 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:15:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:15:52,634 INFO L93 Difference]: Finished difference Result 8602 states and 11829 transitions. [2022-11-20 11:15:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:15:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 4 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 170 [2022-11-20 11:15:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:15:52,659 INFO L225 Difference]: With dead ends: 8602 [2022-11-20 11:15:52,659 INFO L226 Difference]: Without dead ends: 4143 [2022-11-20 11:15:52,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:15:52,686 INFO L413 NwaCegarLoop]: 3140 mSDtfsCounter, 32 mSDsluCounter, 15602 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18742 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:15:52,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 18742 Invalid, 126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:15:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-11-20 11:15:53,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2022-11-20 11:15:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 2868 states have (on average 1.295676429567643) internal successors, (3716), 2944 states have internal predecessors, (3716), 989 states have call successors, (989), 286 states have call predecessors, (989), 285 states have return successors, (987), 973 states have call predecessors, (987), 987 states have call successors, (987) [2022-11-20 11:15:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5692 transitions. [2022-11-20 11:15:53,105 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5692 transitions. Word has length 170 [2022-11-20 11:15:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:15:53,106 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5692 transitions. [2022-11-20 11:15:53,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 5 states have internal predecessors, (92), 4 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 11:15:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5692 transitions. [2022-11-20 11:15:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-20 11:15:53,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:15:53,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:15:53,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:15:53,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:15:53,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:15:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash -729664352, now seen corresponding path program 1 times [2022-11-20 11:15:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068384729] [2022-11-20 11:15:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:15:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:15:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:15:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:15:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:15:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:15:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:15:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:15:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:15:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:15:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:15:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 11:15:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-20 11:15:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-20 11:15:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-11-20 11:15:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:54,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068384729] [2022-11-20 11:15:54,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068384729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:15:54,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:15:54,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:15:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74908928] [2022-11-20 11:15:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:15:54,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:15:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:54,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:15:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:15:54,136 INFO L87 Difference]: Start difference. First operand 4143 states and 5692 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:16:03,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:09,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:16,325 INFO L93 Difference]: Finished difference Result 9759 states and 13938 transitions. [2022-11-20 11:16:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:16:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 181 [2022-11-20 11:16:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:16,362 INFO L225 Difference]: With dead ends: 9759 [2022-11-20 11:16:16,362 INFO L226 Difference]: Without dead ends: 5641 [2022-11-20 11:16:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:16:16,388 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 5792 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 10080 mSolverCounterSat, 3835 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6085 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 13916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3835 IncrementalHoareTripleChecker+Valid, 10080 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:16,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6085 Valid, 3241 Invalid, 13916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3835 Valid, 10080 Invalid, 1 Unknown, 0 Unchecked, 21.1s Time] [2022-11-20 11:16:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2022-11-20 11:16:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4143. [2022-11-20 11:16:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 2868 states have (on average 1.294979079497908) internal successors, (3714), 2944 states have internal predecessors, (3714), 989 states have call successors, (989), 286 states have call predecessors, (989), 285 states have return successors, (987), 973 states have call predecessors, (987), 987 states have call successors, (987) [2022-11-20 11:16:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5690 transitions. [2022-11-20 11:16:16,825 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5690 transitions. Word has length 181 [2022-11-20 11:16:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:16,826 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5690 transitions. [2022-11-20 11:16:16,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 11:16:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5690 transitions. [2022-11-20 11:16:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-20 11:16:16,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:16,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-20 11:16:16,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:16:16,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash 616170603, now seen corresponding path program 1 times [2022-11-20 11:16:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:16,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032184691] [2022-11-20 11:16:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:16:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:16:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:16:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:16:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:16:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:16:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:16:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 11:16:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:16:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 11:16:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 11:16:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-20 11:16:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-11-20 11:16:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-20 11:16:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-20 11:16:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:17,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032184691] [2022-11-20 11:16:17,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032184691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:17,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:17,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:16:17,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770337565] [2022-11-20 11:16:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:17,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:16:17,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:17,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:16:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:16:17,824 INFO L87 Difference]: Start difference. First operand 4143 states and 5690 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:16:27,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:29,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:16:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:45,191 INFO L93 Difference]: Finished difference Result 5646 states and 8275 transitions. [2022-11-20 11:16:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:16:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 197 [2022-11-20 11:16:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:45,226 INFO L225 Difference]: With dead ends: 5646 [2022-11-20 11:16:45,227 INFO L226 Difference]: Without dead ends: 5643 [2022-11-20 11:16:45,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:16:45,232 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 4676 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 10731 mSolverCounterSat, 3054 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 13787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3054 IncrementalHoareTripleChecker+Valid, 10731 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:45,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 3385 Invalid, 13787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3054 Valid, 10731 Invalid, 2 Unknown, 0 Unchecked, 26.3s Time] [2022-11-20 11:16:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2022-11-20 11:16:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 4142. [2022-11-20 11:16:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 2868 states have (on average 1.2946304044630403) internal successors, (3713), 2943 states have internal predecessors, (3713), 988 states have call successors, (988), 286 states have call predecessors, (988), 285 states have return successors, (987), 973 states have call predecessors, (987), 987 states have call successors, (987) [2022-11-20 11:16:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5688 transitions. [2022-11-20 11:16:45,826 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5688 transitions. Word has length 197 [2022-11-20 11:16:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:45,829 INFO L495 AbstractCegarLoop]: Abstraction has 4142 states and 5688 transitions. [2022-11-20 11:16:45,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:16:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5688 transitions. [2022-11-20 11:16:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-20 11:16:45,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:45,842 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] [2022-11-20 11:16:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:16:45,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1101589193, now seen corresponding path program 1 times [2022-11-20 11:16:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:45,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648590566] [2022-11-20 11:16:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:16:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:16:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:16:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:16:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:16:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:16:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:16:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:16:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 11:16:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:16:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:16:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 11:16:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 11:16:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 11:16:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 11:16:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 11:16:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-20 11:16:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-20 11:16:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 11:16:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-20 11:16:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-20 11:16:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 11:16:47,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648590566] [2022-11-20 11:16:47,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648590566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619036102] [2022-11-20 11:16:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:47,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:47,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:47,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:16:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:16:48,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-20 11:16:48,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619036102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:48,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:16:48,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-11-20 11:16:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858301670] [2022-11-20 11:16:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:16:48,517 INFO L87 Difference]: Start difference. First operand 4142 states and 5688 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) [2022-11-20 11:16:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:48,945 INFO L93 Difference]: Finished difference Result 4142 states and 5688 transitions. [2022-11-20 11:16:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:48,945 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 [2022-11-20 11:16:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:48,947 INFO L225 Difference]: With dead ends: 4142 [2022-11-20 11:16:48,947 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:16:48,964 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 [2022-11-20 11:16:48,965 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 68 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6232 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 [2022-11-20 11:16:48,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 6232 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:16:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:16:48,966 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) [2022-11-20 11:16:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:16:48,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2022-11-20 11:16:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:48,968 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:16:48,968 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) [2022-11-20 11:16:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:16:48,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:16:48,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:16:48,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdfd0cb9-1f75-4c0d-a2d9-097220abeb48/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:49,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:17:30,453 WARN L233 SmtUtils]: Spent 41.24s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:18:10,927 WARN L233 SmtUtils]: Spent 40.47s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:18:51,016 WARN L233 SmtUtils]: Spent 40.08s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:19:29,819 WARN L233 SmtUtils]: Spent 38.78s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:20:13,806 WARN L233 SmtUtils]: Spent 43.99s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:20:58,162 WARN L233 SmtUtils]: Spent 44.36s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:21:38,814 WARN L233 SmtUtils]: Spent 40.65s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:22:17,956 WARN L233 SmtUtils]: Spent 39.14s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:22:55,357 WARN L233 SmtUtils]: Spent 37.40s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:23:32,866 WARN L233 SmtUtils]: Spent 37.51s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:24:11,390 WARN L233 SmtUtils]: Spent 38.52s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:24:50,166 WARN L233 SmtUtils]: Spent 38.78s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:25:34,808 WARN L233 SmtUtils]: Spent 44.64s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:26:14,039 WARN L233 SmtUtils]: Spent 39.23s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:26:52,605 WARN L233 SmtUtils]: Spent 38.56s on a formula simplification. DAG size of input: 74 DAG size of output: 71 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)