./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y --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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:37:17,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:37:17,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:37:17,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:37:17,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:37:17,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:37:17,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:37:17,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:37:17,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:37:17,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:37:17,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:37:17,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:37:17,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:37:17,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:37:17,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:37:17,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:37:17,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:37:17,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:37:17,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:37:17,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:37:17,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:37:17,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:37:17,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:37:17,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:37:17,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:37:17,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:37:17,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:37:17,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:37:17,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:37:17,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:37:17,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:37:17,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:37:17,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:37:17,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:37:17,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:37:17,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:37:17,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:37:17,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:37:17,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:37:17,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:37:17,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:37:17,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:37:17,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:37:17,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:37:17,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:37:17,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:37:17,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:37:17,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:37:17,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:37:17,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:37:17,447 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:37:17,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:37:17,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:37:17,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:37:17,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:37:17,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:37:17,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:37:17,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:37:17,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:37:17,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:37:17,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:37:17,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:37:17,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:37:17,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:37:17,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:37:17,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:37:17,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:37:17,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:37:17,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:37:17,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:37:17,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:37:17,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:37:17,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:37:17,452 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_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-11-13 18:37:17,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:37:17,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:37:17,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:37:17,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:37:17,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:37:17,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-13 18:37:17,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/data/7cd00fc63/c69b43e23438476e98b900c2709ab01c/FLAGe90ce6bdd [2021-11-13 18:37:18,656 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:37:18,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-13 18:37:18,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/data/7cd00fc63/c69b43e23438476e98b900c2709ab01c/FLAGe90ce6bdd [2021-11-13 18:37:19,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/data/7cd00fc63/c69b43e23438476e98b900c2709ab01c [2021-11-13 18:37:19,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:37:19,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:37:19,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:37:19,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:37:19,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:37:19,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:37:19" (1/1) ... [2021-11-13 18:37:19,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78563fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:19, skipping insertion in model container [2021-11-13 18:37:19,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:37:19" (1/1) ... [2021-11-13 18:37:19,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:37:19,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:37:19,642 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-13 18:37:19,644 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-13 18:37:19,876 WARN L228 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_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-13 18:37:20,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:37:20,819 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:37:20,928 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-13 18:37:20,930 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-13 18:37:20,952 WARN L228 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_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-13 18:37:21,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:37:21,433 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:37:21,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21 WrapperNode [2021-11-13 18:37:21,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:37:21,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:37:21,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:37:21,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:37:21,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:21,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:21,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:37:21,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:37:21,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:37:21,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:37:21,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:21,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:21,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:21,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:22,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:22,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:22,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:22,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:37:22,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:37:22,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:37:22,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:37:22,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (1/1) ... [2021-11-13 18:37:22,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:37:22,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:37:22,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:37:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:37:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_stall [2021-11-13 18:37:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_stall [2021-11-13 18:37:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_clr [2021-11-13 18:37:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_clr [2021-11-13 18:37:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_status [2021-11-13 18:37:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_status [2021-11-13 18:37:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:37:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:37:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init_setup_buff [2021-11-13 18:37:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init_setup_buff [2021-11-13 18:37:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_set [2021-11-13 18:37:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_set [2021-11-13 18:37:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:37:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:37:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-13 18:37:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-13 18:37:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-13 18:37:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-13 18:37:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 18:37:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 18:37:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:37:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:37:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-13 18:37:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-13 18:37:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_shutdown [2021-11-13 18:37:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_shutdown [2021-11-13 18:37:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_dma [2021-11-13 18:37:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_dma [2021-11-13 18:37:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_csr_busy [2021-11-13 18:37:22,183 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_csr_busy [2021-11-13 18:37:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 18:37:22,183 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 18:37:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_stop [2021-11-13 18:37:22,183 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_stop [2021-11-13 18:37:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-13 18:37:22,184 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-13 18:37:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_writel [2021-11-13 18:37:22,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_writel [2021-11-13 18:37:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:37:22,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:37:22,185 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 18:37:22,185 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 18:37:22,185 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_svc_data_out [2021-11-13 18:37:22,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_svc_data_out [2021-11-13 18:37:22,186 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_dma_chain [2021-11-13 18:37:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_dma_chain [2021-11-13 18:37:22,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:37:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:37:22,186 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-13 18:37:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-13 18:37:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_readl [2021-11-13 18:37:22,187 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_readl [2021-11-13 18:37:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:37:22,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:37:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 18:37:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 18:37:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_control [2021-11-13 18:37:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_control [2021-11-13 18:37:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-13 18:37:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-13 18:37:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_rrdy [2021-11-13 18:37:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_rrdy [2021-11-13 18:37:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_reconnect [2021-11-13 18:37:22,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_reconnect [2021-11-13 18:37:22,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:37:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_readl [2021-11-13 18:37:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_readl [2021-11-13 18:37:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:37:22,192 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:37:22,192 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_postsvc_epinters [2021-11-13 18:37:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_postsvc_epinters [2021-11-13 18:37:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-13 18:37:22,193 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-13 18:37:22,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:37:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 18:37:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 18:37:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-13 18:37:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-13 18:37:22,194 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_rxrequest [2021-11-13 18:37:22,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_rxrequest [2021-11-13 18:37:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 18:37:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 18:37:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 18:37:22,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 18:37:22,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:37:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:37:22,196 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-13 18:37:22,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-13 18:37:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-13 18:37:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-13 18:37:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:37:22,197 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_maxpkt [2021-11-13 18:37:22,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_maxpkt [2021-11-13 18:37:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:37:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:37:22,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:37:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_fifo_flush [2021-11-13 18:37:22,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_fifo_flush [2021-11-13 18:37:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_ep_interrupts [2021-11-13 18:37:22,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_ep_interrupts [2021-11-13 18:37:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_dma [2021-11-13 18:37:22,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_dma [2021-11-13 18:37:22,200 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_get_value [2021-11-13 18:37:22,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_get_value [2021-11-13 18:37:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:37:22,201 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:37:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:37:22,201 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:37:22,201 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_wait_ep_stall [2021-11-13 18:37:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_wait_ep_stall [2021-11-13 18:37:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:37:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:37:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:37:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_ep_interrupts [2021-11-13 18:37:22,203 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_ep_interrupts [2021-11-13 18:37:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:37:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:37:22,206 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 18:37:22,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 18:37:22,207 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_fifo_flush [2021-11-13 18:37:22,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_fifo_flush [2021-11-13 18:37:22,208 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_clear_nak [2021-11-13 18:37:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_clear_nak [2021-11-13 18:37:22,209 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-13 18:37:22,209 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-13 18:37:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:37:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure complete_req [2021-11-13 18:37:22,215 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_req [2021-11-13 18:37:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_writel [2021-11-13 18:37:22,216 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_writel [2021-11-13 18:37:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure empty_req_queue [2021-11-13 18:37:22,216 INFO L138 BoogieDeclarations]: Found implementation of procedure empty_req_queue [2021-11-13 18:37:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:37:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 18:37:22,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 18:37:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_nak [2021-11-13 18:37:22,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_nak [2021-11-13 18:37:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-13 18:37:22,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-13 18:37:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_csr [2021-11-13 18:37:22,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_csr [2021-11-13 18:37:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:37:22,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:37:22,218 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start [2021-11-13 18:37:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start [2021-11-13 18:37:22,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 18:37:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 18:37:22,218 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_bit_set [2021-11-13 18:37:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_bit_set [2021-11-13 18:37:22,218 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_device_status [2021-11-13 18:37:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_device_status [2021-11-13 18:37:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:37:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:37:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 18:37:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 18:37:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_ddptr [2021-11-13 18:37:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_ddptr [2021-11-13 18:37:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:37:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 18:37:22,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 18:37:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 18:37:22,220 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 18:37:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:37:22,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:37:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_dequeue [2021-11-13 18:37:22,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_dequeue [2021-11-13 18:37:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_disable_interrupts [2021-11-13 18:37:22,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_disable_interrupts [2021-11-13 18:37:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_clear_ep_control [2021-11-13 18:37:22,221 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_clear_ep_control [2021-11-13 18:37:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_to_desc [2021-11-13 18:37:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_to_desc [2021-11-13 18:37:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_stall [2021-11-13 18:37:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_stall [2021-11-13 18:37:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:37:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_init [2021-11-13 18:37:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_init [2021-11-13 18:37:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-13 18:37:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-13 18:37:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_start_next_txrequest [2021-11-13 18:37:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_start_next_txrequest [2021-11-13 18:37:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-13 18:37:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-13 18:37:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_probe [2021-11-13 18:37:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_probe [2021-11-13 18:37:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:37:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:37:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:37:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:37:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:37:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:37:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:37:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_ep_interrupts [2021-11-13 18:37:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_ep_interrupts [2021-11-13 18:37:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-13 18:37:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-13 18:37:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_read_ep_status [2021-11-13 18:37:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_read_ep_status [2021-11-13 18:37:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_free_request [2021-11-13 18:37:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_free_request [2021-11-13 18:37:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_pcd_ep_enable [2021-11-13 18:37:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_pcd_ep_enable [2021-11-13 18:37:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_write_csr [2021-11-13 18:37:22,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_write_csr [2021-11-13 18:37:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-13 18:37:22,228 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-13 18:37:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_complete_transfer [2021-11-13 18:37:22,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_complete_transfer [2021-11-13 18:37:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_remove [2021-11-13 18:37:22,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_remove [2021-11-13 18:37:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:37:22,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:37:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-11-13 18:37:22,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-11-13 18:37:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 18:37:22,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 18:37:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2021-11-13 18:37:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2021-11-13 18:37:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_bit_clr [2021-11-13 18:37:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_bit_clr [2021-11-13 18:37:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:37:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:37:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:37:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-13 18:37:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_set_disconnect [2021-11-13 18:37:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_set_disconnect [2021-11-13 18:37:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:37:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_ep_set_bufsz [2021-11-13 18:37:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_ep_set_bufsz [2021-11-13 18:37:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:37:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:37:22,232 INFO L130 BoogieDeclarations]: Found specification of procedure pch_udc_enable_interrupts [2021-11-13 18:37:22,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_udc_enable_interrupts [2021-11-13 18:37:22,232 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-13 18:37:22,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-13 18:37:23,391 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:37:34,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:37:34,696 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 18:37:34,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:37:34 BoogieIcfgContainer [2021-11-13 18:37:34,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:37:34,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:37:34,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:37:34,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:37:34,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:37:19" (1/3) ... [2021-11-13 18:37:34,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2682c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:37:34, skipping insertion in model container [2021-11-13 18:37:34,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:37:21" (2/3) ... [2021-11-13 18:37:34,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2682c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:37:34, skipping insertion in model container [2021-11-13 18:37:34,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:37:34" (3/3) ... [2021-11-13 18:37:34,714 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-13 18:37:34,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:37:34,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:37:34,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:37:34,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:37:34,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:37:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) [2021-11-13 18:37:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 18:37:34,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:34,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:34,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1740150991, now seen corresponding path program 1 times [2021-11-13 18:37:34,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:34,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231003704] [2021-11-13 18:37:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:34,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:37:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:37:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:37:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:37:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:37:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 18:37:35,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:35,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231003704] [2021-11-13 18:37:35,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231003704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:35,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:35,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:37:35,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646042302] [2021-11-13 18:37:35,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:35,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:37:35,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:37:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:35,782 INFO L87 Difference]: Start difference. First operand has 1795 states, 1184 states have (on average 1.3597972972972974) internal successors, (1610), 1255 states have internal predecessors, (1610), 505 states have call successors, (505), 110 states have call predecessors, (505), 109 states have return successors, (496), 482 states have call predecessors, (496), 496 states have call successors, (496) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:37:37,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:40,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:44,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:46,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:53,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:55,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:58,918 INFO L93 Difference]: Finished difference Result 5435 states and 8077 transitions. [2021-11-13 18:37:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:37:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 48 [2021-11-13 18:37:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:59,065 INFO L225 Difference]: With dead ends: 5435 [2021-11-13 18:37:59,065 INFO L226 Difference]: Without dead ends: 3602 [2021-11-13 18:37:59,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:37:59,101 INFO L933 BasicCegarLoop]: 2691 mSDtfsCounter, 3985 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 2912 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20851.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 6075 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.76ms SdHoareTripleChecker+Time, 2912 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22446.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:59,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4299 Valid, 6075 Invalid, 6248 Unknown, 0 Unchecked, 105.76ms Time], IncrementalHoareTripleChecker [2912 Valid, 3330 Invalid, 6 Unknown, 0 Unchecked, 22446.92ms Time] [2021-11-13 18:37:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-13 18:37:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3299. [2021-11-13 18:37:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2160 states have (on average 1.3388888888888888) internal successors, (2892), 2267 states have internal predecessors, (2892), 922 states have call successors, (922), 217 states have call predecessors, (922), 216 states have return successors, (921), 893 states have call predecessors, (921), 921 states have call successors, (921) [2021-11-13 18:37:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4735 transitions. [2021-11-13 18:37:59,532 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4735 transitions. Word has length 48 [2021-11-13 18:37:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:59,534 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4735 transitions. [2021-11-13 18:37:59,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:37:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4735 transitions. [2021-11-13 18:37:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-13 18:37:59,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:59,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:59,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:37:59,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:59,552 INFO L85 PathProgramCache]: Analyzing trace with hash -701291158, now seen corresponding path program 1 times [2021-11-13 18:37:59,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:59,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969522004] [2021-11-13 18:37:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:59,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:37:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:37:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:37:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:37:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:37:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 18:37:59,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:59,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969522004] [2021-11-13 18:37:59,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969522004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:59,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:59,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:37:59,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707942582] [2021-11-13 18:37:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:59,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:37:59,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:37:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:37:59,939 INFO L87 Difference]: Start difference. First operand 3299 states and 4735 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:38:02,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:04,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:14,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:16,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:20,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:22,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:22,230 INFO L93 Difference]: Finished difference Result 10340 states and 14993 transitions. [2021-11-13 18:38:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:38:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-11-13 18:38:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:22,302 INFO L225 Difference]: With dead ends: 10340 [2021-11-13 18:38:22,302 INFO L226 Difference]: Without dead ends: 7054 [2021-11-13 18:38:22,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:38:22,322 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3981 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 3607 mSolverCounterSat, 2731 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19948.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4328 SdHoareTripleChecker+Valid, 6975 SdHoareTripleChecker+Invalid, 6343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.02ms SdHoareTripleChecker+Time, 2731 IncrementalHoareTripleChecker+Valid, 3607 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21656.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:22,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4328 Valid, 6975 Invalid, 6343 Unknown, 0 Unchecked, 84.02ms Time], IncrementalHoareTripleChecker [2731 Valid, 3607 Invalid, 5 Unknown, 0 Unchecked, 21656.59ms Time] [2021-11-13 18:38:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-11-13 18:38:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 6451. [2021-11-13 18:38:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6451 states, 4218 states have (on average 1.3380749170222854) internal successors, (5644), 4433 states have internal predecessors, (5644), 1804 states have call successors, (1804), 429 states have call predecessors, (1804), 428 states have return successors, (1803), 1746 states have call predecessors, (1803), 1803 states have call successors, (1803) [2021-11-13 18:38:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9251 transitions. [2021-11-13 18:38:22,688 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9251 transitions. Word has length 50 [2021-11-13 18:38:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:22,689 INFO L470 AbstractCegarLoop]: Abstraction has 6451 states and 9251 transitions. [2021-11-13 18:38:22,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:38:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9251 transitions. [2021-11-13 18:38:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-13 18:38:22,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:22,703 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-13 18:38:22,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:38:22,705 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:38:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash -782389508, now seen corresponding path program 1 times [2021-11-13 18:38:22,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:38:22,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821879996] [2021-11-13 18:38:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:22,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:38:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:38:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:38:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:38:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:38:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:38:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:38:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:38:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:38:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:38:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 18:38:23,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:38:23,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821879996] [2021-11-13 18:38:23,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821879996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:23,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:23,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:38:23,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781612243] [2021-11-13 18:38:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:23,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:38:23,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:38:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:38:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:38:23,246 INFO L87 Difference]: Start difference. First operand 6451 states and 9251 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:38:25,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:27,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:35,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:37,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:39,963 INFO L93 Difference]: Finished difference Result 9787 states and 14056 transitions. [2021-11-13 18:38:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:38:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2021-11-13 18:38:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:40,058 INFO L225 Difference]: With dead ends: 9787 [2021-11-13 18:38:40,058 INFO L226 Difference]: Without dead ends: 9784 [2021-11-13 18:38:40,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:38:40,068 INFO L933 BasicCegarLoop]: 2439 mSDtfsCounter, 2898 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 2151 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15026.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.75ms SdHoareTripleChecker+Time, 2151 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16279.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:40,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3046 Valid, 5610 Invalid, 4916 Unknown, 0 Unchecked, 56.75ms Time], IncrementalHoareTripleChecker [2151 Valid, 2761 Invalid, 4 Unknown, 0 Unchecked, 16279.38ms Time] [2021-11-13 18:38:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2021-11-13 18:38:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 8985. [2021-11-13 18:38:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8985 states, 5964 states have (on average 1.3335010060362174) internal successors, (7953), 6216 states have internal predecessors, (7953), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 663 states have return successors, (2396), 2288 states have call predecessors, (2396), 2356 states have call successors, (2396) [2021-11-13 18:38:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 12706 transitions. [2021-11-13 18:38:40,677 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 12706 transitions. Word has length 93 [2021-11-13 18:38:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:40,678 INFO L470 AbstractCegarLoop]: Abstraction has 8985 states and 12706 transitions. [2021-11-13 18:38:40,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:38:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 12706 transitions. [2021-11-13 18:38:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:38:40,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:40,698 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-13 18:38:40,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:38:40,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:38:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash -321111901, now seen corresponding path program 1 times [2021-11-13 18:38:40,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:38:40,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543756694] [2021-11-13 18:38:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:40,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:38:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:38:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:38:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:38:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:38:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:38:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:38:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:38:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:38:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:38:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:38:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:38:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:38:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 18:38:41,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:38:41,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543756694] [2021-11-13 18:38:41,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543756694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:41,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:41,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:38:41,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772063904] [2021-11-13 18:38:41,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:41,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:38:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:38:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:38:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:38:41,108 INFO L87 Difference]: Start difference. First operand 8985 states and 12706 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:38:43,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:45,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:47,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:55,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:57,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:59,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:01,971 INFO L93 Difference]: Finished difference Result 18824 states and 26850 transitions. [2021-11-13 18:39:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:39:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-11-13 18:39:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:02,151 INFO L225 Difference]: With dead ends: 18824 [2021-11-13 18:39:02,151 INFO L226 Difference]: Without dead ends: 9852 [2021-11-13 18:39:02,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:39:02,212 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 2019 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 2029 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19102.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 5444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.61ms SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20394.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:02,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 5667 Invalid, 5444 Unknown, 0 Unchecked, 46.61ms Time], IncrementalHoareTripleChecker [2029 Valid, 3409 Invalid, 6 Unknown, 0 Unchecked, 20394.56ms Time] [2021-11-13 18:39:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9852 states. [2021-11-13 18:39:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9852 to 8997. [2021-11-13 18:39:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8997 states, 5974 states have (on average 1.3329427519250083) internal successors, (7963), 6228 states have internal predecessors, (7963), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-11-13 18:39:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 12720 transitions. [2021-11-13 18:39:02,743 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 12720 transitions. Word has length 113 [2021-11-13 18:39:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:02,744 INFO L470 AbstractCegarLoop]: Abstraction has 8997 states and 12720 transitions. [2021-11-13 18:39:02,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:39:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 12720 transitions. [2021-11-13 18:39:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:39:02,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:02,767 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-13 18:39:02,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:39:02,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116133, now seen corresponding path program 1 times [2021-11-13 18:39:02,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:02,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587211719] [2021-11-13 18:39:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:02,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:39:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:39:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:39:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:39:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:39:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:39:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:39:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:39:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:39:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:39:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:39:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:39:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 18:39:03,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:03,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587211719] [2021-11-13 18:39:03,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587211719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:03,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:03,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:39:03,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379311879] [2021-11-13 18:39:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:03,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:03,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:03,176 INFO L87 Difference]: Start difference. First operand 8997 states and 12720 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:39:05,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:07,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:09,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:16,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:18,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:21,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:23,325 INFO L93 Difference]: Finished difference Result 18840 states and 26868 transitions. [2021-11-13 18:39:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:39:23,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-11-13 18:39:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:23,388 INFO L225 Difference]: With dead ends: 18840 [2021-11-13 18:39:23,388 INFO L226 Difference]: Without dead ends: 9856 [2021-11-13 18:39:23,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:39:23,440 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 2019 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 2029 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18344.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.06ms SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19617.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:23,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 5658 Invalid, 5438 Unknown, 0 Unchecked, 40.06ms Time], IncrementalHoareTripleChecker [2029 Valid, 3403 Invalid, 6 Unknown, 0 Unchecked, 19617.31ms Time] [2021-11-13 18:39:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9856 states. [2021-11-13 18:39:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 9001. [2021-11-13 18:39:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9001 states, 5978 states have (on average 1.3327199732351958) internal successors, (7967), 6232 states have internal predecessors, (7967), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-11-13 18:39:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 12724 transitions. [2021-11-13 18:39:24,011 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 12724 transitions. Word has length 113 [2021-11-13 18:39:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:24,013 INFO L470 AbstractCegarLoop]: Abstraction has 9001 states and 12724 transitions. [2021-11-13 18:39:24,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:39:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 12724 transitions. [2021-11-13 18:39:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:39:24,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:24,030 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-13 18:39:24,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:39:24,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash 13768231, now seen corresponding path program 1 times [2021-11-13 18:39:24,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:24,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144530498] [2021-11-13 18:39:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:24,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:39:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:39:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:39:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:39:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:39:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:39:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:39:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:39:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:39:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:39:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:39:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:39:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 18:39:24,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:24,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144530498] [2021-11-13 18:39:24,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144530498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:24,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:24,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:39:24,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293247769] [2021-11-13 18:39:24,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:24,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:24,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:39:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:24,406 INFO L87 Difference]: Start difference. First operand 9001 states and 12724 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 18:39:26,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:28,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:30,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:38,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:40,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:42,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:45,158 INFO L93 Difference]: Finished difference Result 18846 states and 26872 transitions. [2021-11-13 18:39:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:39:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2021-11-13 18:39:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:45,217 INFO L225 Difference]: With dead ends: 18846 [2021-11-13 18:39:45,218 INFO L226 Difference]: Without dead ends: 9858 [2021-11-13 18:39:45,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:39:45,252 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 2019 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 3401 mSolverCounterSat, 2028 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18816.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.49ms SdHoareTripleChecker+Time, 2028 IncrementalHoareTripleChecker+Valid, 3401 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20187.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:45,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 5662 Invalid, 5435 Unknown, 0 Unchecked, 44.49ms Time], IncrementalHoareTripleChecker [2028 Valid, 3401 Invalid, 6 Unknown, 0 Unchecked, 20187.16ms Time] [2021-11-13 18:39:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2021-11-13 18:39:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 9003. [2021-11-13 18:39:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9003 states, 5980 states have (on average 1.3326086956521739) internal successors, (7969), 6234 states have internal predecessors, (7969), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-11-13 18:39:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 12726 transitions. [2021-11-13 18:39:45,730 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 12726 transitions. Word has length 113 [2021-11-13 18:39:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:45,731 INFO L470 AbstractCegarLoop]: Abstraction has 9003 states and 12726 transitions. [2021-11-13 18:39:45,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 18:39:45,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 12726 transitions. [2021-11-13 18:39:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-13 18:39:45,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:45,750 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 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] [2021-11-13 18:39:45,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:39:45,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash -162924404, now seen corresponding path program 1 times [2021-11-13 18:39:45,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:39:45,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254205697] [2021-11-13 18:39:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:45,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:39:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:39:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:39:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:39:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:39:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:39:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:39:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:39:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:39:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:39:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:39:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:39:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:39:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 18:39:46,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:39:46,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254205697] [2021-11-13 18:39:46,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254205697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:39:46,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583916982] [2021-11-13 18:39:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:46,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:39:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:39:46,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:39:46,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:43:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:04,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:43:04,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:43:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 18:43:04,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:43:04,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583916982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:43:04,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:43:04,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-11-13 18:43:04,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862036748] [2021-11-13 18:43:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:43:04,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:43:04,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:43:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:43:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:43:04,653 INFO L87 Difference]: Start difference. First operand 9003 states and 12726 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:43:05,285 INFO L93 Difference]: Finished difference Result 18022 states and 25546 transitions. [2021-11-13 18:43:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:43:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2021-11-13 18:43:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:43:05,341 INFO L225 Difference]: With dead ends: 18022 [2021-11-13 18:43:05,341 INFO L226 Difference]: Without dead ends: 9011 [2021-11-13 18:43:05,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:43:05,384 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 2 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7618 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.25ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.85ms IncrementalHoareTripleChecker+Time [2021-11-13 18:43:05,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7618 Invalid, 19 Unknown, 0 Unchecked, 13.25ms Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 71.85ms Time] [2021-11-13 18:43:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9011 states. [2021-11-13 18:43:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9011 to 9011. [2021-11-13 18:43:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9011 states, 5988 states have (on average 1.3321643286573146) internal successors, (7977), 6242 states have internal predecessors, (7977), 2357 states have call successors, (2357), 658 states have call predecessors, (2357), 665 states have return successors, (2400), 2288 states have call predecessors, (2400), 2356 states have call successors, (2400) [2021-11-13 18:43:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 12734 transitions. [2021-11-13 18:43:06,029 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 12734 transitions. Word has length 115 [2021-11-13 18:43:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:43:06,029 INFO L470 AbstractCegarLoop]: Abstraction has 9011 states and 12734 transitions. [2021-11-13 18:43:06,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 12734 transitions. [2021-11-13 18:43:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:43:06,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:43:06,049 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 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] [2021-11-13 18:43:06,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 18:43:06,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:43:06,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:43:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:43:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash -340257750, now seen corresponding path program 1 times [2021-11-13 18:43:06,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:43:06,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577993811] [2021-11-13 18:43:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:43:06,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:43:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:43:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:43:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:43:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:43:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:43:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:43:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:43:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:43:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:43:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:43:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:43:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:43:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 18:43:06,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:43:06,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577993811] [2021-11-13 18:43:06,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577993811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:43:06,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58830659] [2021-11-13 18:43:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:43:06,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:43:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:43:06,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:43:06,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:43:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:29,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2375 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:43:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:43:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 18:43:29,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:43:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 18:43:30,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58830659] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:43:30,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:43:30,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 7] total 17 [2021-11-13 18:43:30,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927960942] [2021-11-13 18:43:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:43:30,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:43:30,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:43:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:43:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:43:30,323 INFO L87 Difference]: Start difference. First operand 9011 states and 12734 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:43:31,435 INFO L93 Difference]: Finished difference Result 27059 states and 38260 transitions. [2021-11-13 18:43:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:43:31,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-11-13 18:43:31,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:43:31,554 INFO L225 Difference]: With dead ends: 27059 [2021-11-13 18:43:31,555 INFO L226 Difference]: Without dead ends: 18061 [2021-11-13 18:43:31,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:43:31,609 INFO L933 BasicCegarLoop]: 3025 mSDtfsCounter, 2542 mSDsluCounter, 11597 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 14622 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:43:31,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2549 Valid, 14622 Invalid, 25 Unknown, 0 Unchecked, 40.61ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 104.81ms Time] [2021-11-13 18:43:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18061 states. [2021-11-13 18:43:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18061 to 18014. [2021-11-13 18:43:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18014 states, 11971 states have (on average 1.331968924901846) internal successors, (15945), 12483 states have internal predecessors, (15945), 4708 states have call successors, (4708), 1315 states have call predecessors, (4708), 1334 states have return successors, (4815), 4571 states have call predecessors, (4815), 4707 states have call successors, (4815) [2021-11-13 18:43:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18014 states to 18014 states and 25468 transitions. [2021-11-13 18:43:32,853 INFO L78 Accepts]: Start accepts. Automaton has 18014 states and 25468 transitions. Word has length 118 [2021-11-13 18:43:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:43:32,853 INFO L470 AbstractCegarLoop]: Abstraction has 18014 states and 25468 transitions. [2021-11-13 18:43:32,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 18014 states and 25468 transitions. [2021-11-13 18:43:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-13 18:43:32,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:43:32,881 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 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] [2021-11-13 18:43:32,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:43:33,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:43:33,095 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:43:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:43:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1041857624, now seen corresponding path program 1 times [2021-11-13 18:43:33,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:43:33,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650363507] [2021-11-13 18:43:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:43:33,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:43:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:43:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:43:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:43:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:43:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:43:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:43:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:43:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:43:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:43:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:43:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:43:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:43:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:43:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-13 18:43:33,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:43:33,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650363507] [2021-11-13 18:43:33,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650363507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:43:33,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:43:33,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:43:33,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278310510] [2021-11-13 18:43:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:43:33,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:43:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:43:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:43:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:43:33,496 INFO L87 Difference]: Start difference. First operand 18014 states and 25468 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:35,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:37,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:39,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:48,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:50,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:52,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:54,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:43:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:43:57,864 INFO L93 Difference]: Finished difference Result 37461 states and 53348 transitions. [2021-11-13 18:43:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:43:57,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-11-13 18:43:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:43:58,097 INFO L225 Difference]: With dead ends: 37461 [2021-11-13 18:43:58,097 INFO L226 Difference]: Without dead ends: 19460 [2021-11-13 18:43:58,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:43:58,163 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 2016 mSDsluCounter, 5045 mSDsCounter, 0 mSdLazyCounter, 4433 mSolverCounterSat, 2030 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21879.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 7213 SdHoareTripleChecker+Invalid, 6470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.04ms SdHoareTripleChecker+Time, 2030 IncrementalHoareTripleChecker+Valid, 4433 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23569.11ms IncrementalHoareTripleChecker+Time [2021-11-13 18:43:58,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2141 Valid, 7213 Invalid, 6470 Unknown, 0 Unchecked, 57.04ms Time], IncrementalHoareTripleChecker [2030 Valid, 4433 Invalid, 7 Unknown, 0 Unchecked, 23569.11ms Time] [2021-11-13 18:43:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19460 states. [2021-11-13 18:43:59,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19460 to 17802. [2021-11-13 18:43:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17802 states, 11813 states have (on average 1.3298061457716075) internal successors, (15709), 12321 states have internal predecessors, (15709), 4657 states have call successors, (4657), 1312 states have call predecessors, (4657), 1331 states have return successors, (4764), 4520 states have call predecessors, (4764), 4656 states have call successors, (4764) [2021-11-13 18:43:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 25130 transitions. [2021-11-13 18:43:59,202 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 25130 transitions. Word has length 118 [2021-11-13 18:43:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:43:59,203 INFO L470 AbstractCegarLoop]: Abstraction has 17802 states and 25130 transitions. [2021-11-13 18:43:59,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:43:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 25130 transitions. [2021-11-13 18:43:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 18:43:59,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:43:59,233 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 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] [2021-11-13 18:43:59,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:43:59,234 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:43:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:43:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1513628293, now seen corresponding path program 1 times [2021-11-13 18:43:59,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:43:59,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938303195] [2021-11-13 18:43:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:43:59,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:43:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:44:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:44:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:44:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:44:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:44:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:44:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:44:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:44:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:44:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:44:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:44:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:44:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:44:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 18:44:00,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:00,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938303195] [2021-11-13 18:44:00,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938303195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:44:00,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796036128] [2021-11-13 18:44:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:00,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:00,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:44:00,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:44:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2412 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 18:44:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:44:01,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-13 18:44:14,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-11-13 18:44:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 18:44:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:44:16,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796036128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:44:16,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:44:16,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-11-13 18:44:16,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781279624] [2021-11-13 18:44:16,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:44:16,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:44:16,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:44:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=297, Unknown=3, NotChecked=0, Total=342 [2021-11-13 18:44:16,223 INFO L87 Difference]: Start difference. First operand 17802 states and 25130 transitions. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 13 states have internal predecessors, (111), 5 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-13 18:44:18,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:20,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:22,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:24,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:26,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:28,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:31,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:33,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:44:35,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:05,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:07,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:09,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:12,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:14,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:16,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:18,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:20,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:22,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:24,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:26,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:28,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:30,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:32,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:41,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:43,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:45,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:47,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:49,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:51,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:53,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:55,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:57,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:59,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:01,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:03,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:05,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:49,558 INFO L93 Difference]: Finished difference Result 73779 states and 107713 transitions. [2021-11-13 18:47:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-13 18:47:49,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 13 states have internal predecessors, (111), 5 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 125 [2021-11-13 18:47:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:50,117 INFO L225 Difference]: With dead ends: 73779 [2021-11-13 18:47:50,118 INFO L226 Difference]: Without dead ends: 55990 [2021-11-13 18:47:50,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=560, Invalid=4103, Unknown=29, NotChecked=0, Total=4692 [2021-11-13 18:47:50,216 INFO L933 BasicCegarLoop]: 5908 mSDtfsCounter, 7328 mSDsluCounter, 46946 mSDsCounter, 0 mSdLazyCounter, 54090 mSolverCounterSat, 6819 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142828.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7765 SdHoareTripleChecker+Valid, 52854 SdHoareTripleChecker+Invalid, 64452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 493.81ms SdHoareTripleChecker+Time, 6819 IncrementalHoareTripleChecker+Valid, 54090 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 3507 IncrementalHoareTripleChecker+Unchecked, 152670.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:50,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7765 Valid, 52854 Invalid, 64452 Unknown, 0 Unchecked, 493.81ms Time], IncrementalHoareTripleChecker [6819 Valid, 54090 Invalid, 36 Unknown, 3507 Unchecked, 152670.82ms Time] [2021-11-13 18:47:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55990 states. [2021-11-13 18:47:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55990 to 50799. [2021-11-13 18:47:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50799 states, 34484 states have (on average 1.3661408189305184) internal successors, (47110), 36356 states have internal predecessors, (47110), 12616 states have call successors, (12616), 3579 states have call predecessors, (12616), 3698 states have return successors, (14026), 11827 states have call predecessors, (14026), 12615 states have call successors, (14026) [2021-11-13 18:47:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50799 states to 50799 states and 73752 transitions. [2021-11-13 18:47:53,119 INFO L78 Accepts]: Start accepts. Automaton has 50799 states and 73752 transitions. Word has length 125 [2021-11-13 18:47:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:53,120 INFO L470 AbstractCegarLoop]: Abstraction has 50799 states and 73752 transitions. [2021-11-13 18:47:53,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 13 states have internal predecessors, (111), 5 states have call successors, (29), 6 states have call predecessors, (29), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-13 18:47:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 50799 states and 73752 transitions. [2021-11-13 18:47:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 18:47:53,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:53,437 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:53,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:53,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef35a2e6-e7e9-4fa1-bf44-ed745344812c/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:47:53,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1543935476, now seen corresponding path program 1 times [2021-11-13 18:47:53,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:53,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440825984] [2021-11-13 18:47:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:53,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:47:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:47:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:47:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:47:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:47:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:47:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:47:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:47:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:47:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:47:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:47:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:47:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:47:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:47:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 18:47:54,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:47:54,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440825984] [2021-11-13 18:47:54,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440825984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:54,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:54,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:47:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770881223] [2021-11-13 18:47:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:54,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:47:54,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:47:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:47:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:47:54,357 INFO L87 Difference]: Start difference. First operand 50799 states and 73752 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:47:56,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:58,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:00,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:02,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:05,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:07,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:09,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:11,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:13,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:36,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:38,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:40,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:42,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:44,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:46,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:48,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:50,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:52,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:09,464 INFO L93 Difference]: Finished difference Result 108199 states and 158910 transitions. [2021-11-13 18:49:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-13 18:49:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2021-11-13 18:49:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:09,981 INFO L225 Difference]: With dead ends: 108199 [2021-11-13 18:49:09,982 INFO L226 Difference]: Without dead ends: 57413 [2021-11-13 18:49:10,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2021-11-13 18:49:10,207 INFO L933 BasicCegarLoop]: 3654 mSDtfsCounter, 3793 mSDsluCounter, 16463 mSDsCounter, 0 mSdLazyCounter, 22387 mSolverCounterSat, 3103 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67144.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 20117 SdHoareTripleChecker+Invalid, 25508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 172.30ms SdHoareTripleChecker+Time, 3103 IncrementalHoareTripleChecker+Valid, 22387 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72086.88ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 20117 Invalid, 25508 Unknown, 0 Unchecked, 172.30ms Time], IncrementalHoareTripleChecker [3103 Valid, 22387 Invalid, 18 Unknown, 0 Unchecked, 72086.88ms Time] [2021-11-13 18:49:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57413 states. [2021-11-13 18:49:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57413 to 50950. [2021-11-13 18:49:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50950 states, 34587 states have (on average 1.3652239280654581) internal successors, (47219), 36453 states have internal predecessors, (47219), 12639 states have call successors, (12639), 3596 states have call predecessors, (12639), 3723 states have return successors, (14048), 11864 states have call predecessors, (14048), 12638 states have call successors, (14048) [2021-11-13 18:49:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50950 states to 50950 states and 73906 transitions. [2021-11-13 18:49:12,794 INFO L78 Accepts]: Start accepts. Automaton has 50950 states and 73906 transitions. Word has length 132 [2021-11-13 18:49:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:12,795 INFO L470 AbstractCegarLoop]: Abstraction has 50950 states and 73906 transitions. [2021-11-13 18:49:12,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:49:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 50950 states and 73906 transitions. [2021-11-13 18:49:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-13 18:49:13,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:13,142 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:13,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:49:13,143 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:13,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2101393663, now seen corresponding path program 1 times [2021-11-13 18:49:13,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:13,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019452193] [2021-11-13 18:49:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:13,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:49:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:49:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 18:49:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:49:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-13 18:49:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:49:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:49:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:49:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:49:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:49:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:49:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:49:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:49:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:49:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 18:49:14,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:14,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019452193] [2021-11-13 18:49:14,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019452193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:14,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:14,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 18:49:14,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257908595] [2021-11-13 18:49:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:14,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:49:14,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:49:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:49:14,111 INFO L87 Difference]: Start difference. First operand 50950 states and 73906 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 10 states have internal predecessors, (81), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:49:16,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:18,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:20,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:22,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:24,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:26,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:28,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:31,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:33,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:35,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:37,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:06,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:08,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:10,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:12,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:14,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:16,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:18,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:20,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:22,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:24,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:26,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []