./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:29:03,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:29:03,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:29:03,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:29:03,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:29:03,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:29:03,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:29:03,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:29:03,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:29:03,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:29:03,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:29:03,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:29:03,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:29:03,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:29:03,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:29:03,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:29:03,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:29:03,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:29:03,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:29:03,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:29:03,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:29:03,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:29:03,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:29:03,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:29:03,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:29:03,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:29:03,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:29:03,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:29:03,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:29:03,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:29:03,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:29:03,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:29:03,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:29:03,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:29:03,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:29:03,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:29:03,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:29:03,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:29:03,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:29:03,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:29:03,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:29:03,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:29:03,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:29:03,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:29:03,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:29:03,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:29:03,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:29:03,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:29:03,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:29:03,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:29:03,690 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:29:03,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:29:03,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:29:03,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:29:03,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:29:03,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:29:03,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:29:03,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:29:03,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:29:03,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:29:03,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:29:03,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:29:03,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:29:03,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:29:03,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:29:03,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:29:03,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:29:03,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:29:03,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:29:03,696 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:29:03,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:29:03,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:29:03,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:29:03,698 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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-11-13 18:29:03,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:29:03,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:29:03,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:29:03,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:29:03,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:29:03,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 18:29:04,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/data/fd60430b5/3684612919884b23b3ec1a46de7848b0/FLAG638fe292e [2021-11-13 18:29:04,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:29:04,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 18:29:05,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/data/fd60430b5/3684612919884b23b3ec1a46de7848b0/FLAG638fe292e [2021-11-13 18:29:05,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/data/fd60430b5/3684612919884b23b3ec1a46de7848b0 [2021-11-13 18:29:05,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:29:05,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:29:05,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:05,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:29:05,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:29:05,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:05" (1/1) ... [2021-11-13 18:29:05,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b10aab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:05, skipping insertion in model container [2021-11-13 18:29:05,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:29:05" (1/1) ... [2021-11-13 18:29:05,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:29:05,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:29:07,314 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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-13 18:29:09,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:29:09,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:29:09,447 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_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-13 18:29:09,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:29:10,033 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:29:10,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10 WrapperNode [2021-11-13 18:29:10,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:29:10,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:29:10,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:29:10,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:29:10,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:29:10,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:29:10,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:29:10,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:29:10,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:10,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:11,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:11,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:11,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:29:11,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:29:11,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:29:11,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:29:11,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (1/1) ... [2021-11-13 18:29:11,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:29:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:29:11,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:29:11,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:29:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-13 18:29:11,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-13 18:29:11,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2021-11-13 18:29:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2021-11-13 18:29:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-13 18:29:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-13 18:29:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 18:29:11,394 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 18:29:11,394 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-13 18:29:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-13 18:29:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-13 18:29:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-13 18:29:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-13 18:29:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-13 18:29:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:29:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:29:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-11-13 18:29:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-11-13 18:29:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 18:29:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 18:29:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:29:11,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:29:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-13 18:29:11,397 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-13 18:29:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-13 18:29:11,397 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-13 18:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-11-13 18:29:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-11-13 18:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-11-13 18:29:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-11-13 18:29:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2021-11-13 18:29:11,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2021-11-13 18:29:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:29:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:29:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-13 18:29:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-13 18:29:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-11-13 18:29:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-11-13 18:29:11,400 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-13 18:29:11,400 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-13 18:29:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-11-13 18:29:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-11-13 18:29:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-11-13 18:29:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-11-13 18:29:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-13 18:29:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-13 18:29:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-13 18:29:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-13 18:29:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-13 18:29:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-13 18:29:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-11-13 18:29:11,402 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-11-13 18:29:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:29:11,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:29:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-11-13 18:29:11,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-11-13 18:29:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 18:29:11,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 18:29:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-11-13 18:29:11,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-11-13 18:29:11,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:29:11,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:29:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 18:29:11,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 18:29:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 18:29:11,407 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 18:29:11,407 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-13 18:29:11,407 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-13 18:29:11,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:29:11,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:29:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-13 18:29:11,409 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-13 18:29:11,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:29:11,410 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:29:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-13 18:29:11,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-13 18:29:11,410 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-11-13 18:29:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-11-13 18:29:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 18:29:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 18:29:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 18:29:11,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 18:29:11,411 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:29:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:29:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-13 18:29:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-13 18:29:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-13 18:29:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-13 18:29:11,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:29:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-13 18:29:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-13 18:29:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-13 18:29:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-13 18:29:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-13 18:29:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-13 18:29:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:29:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-11-13 18:29:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-11-13 18:29:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 18:29:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 18:29:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-13 18:29:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-13 18:29:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-13 18:29:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-13 18:29:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 18:29:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-13 18:29:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-13 18:29:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:29:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:29:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 18:29:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 18:29:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:29:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:29:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-13 18:29:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-13 18:29:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-11-13 18:29:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-11-13 18:29:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-13 18:29:11,423 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-13 18:29:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:29:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:29:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2021-11-13 18:29:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2021-11-13 18:29:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:29:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:29:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-13 18:29:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-13 18:29:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-13 18:29:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-13 18:29:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:29:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:29:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:29:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-13 18:29:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-13 18:29:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:29:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:29:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 18:29:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 18:29:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-13 18:29:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-13 18:29:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:29:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-13 18:29:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-13 18:29:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-13 18:29:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-13 18:29:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-11-13 18:29:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-11-13 18:29:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:29:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 18:29:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 18:29:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-13 18:29:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-13 18:29:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-13 18:29:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-13 18:29:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:29:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:29:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-13 18:29:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-13 18:29:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 18:29:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 18:29:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-13 18:29:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-13 18:29:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-11-13 18:29:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-11-13 18:29:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-13 18:29:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-13 18:29:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-13 18:29:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-13 18:29:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-13 18:29:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-13 18:29:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-13 18:29:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-13 18:29:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-13 18:29:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-13 18:29:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 18:29:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 18:29:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:29:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 18:29:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 18:29:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-13 18:29:11,444 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-13 18:29:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-13 18:29:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-13 18:29:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-13 18:29:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-13 18:29:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:29:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:29:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-13 18:29:11,445 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-13 18:29:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-13 18:29:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-13 18:29:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-13 18:29:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-13 18:29:11,446 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-13 18:29:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-11-13 18:29:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-11-13 18:29:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:29:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-13 18:29:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-13 18:29:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-13 18:29:11,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-13 18:29:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-13 18:29:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-13 18:29:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:29:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:29:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:29:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:29:11,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:29:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2021-11-13 18:29:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2021-11-13 18:29:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:29:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:29:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-13 18:29:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-13 18:29:11,449 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-13 18:29:11,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-13 18:29:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-11-13 18:29:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-11-13 18:29:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-13 18:29:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-13 18:29:11,450 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-11-13 18:29:11,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-11-13 18:29:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-13 18:29:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-13 18:29:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-13 18:29:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-13 18:29:11,451 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 18:29:11,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 18:29:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 18:29:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 18:29:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:29:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:29:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-13 18:29:11,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-13 18:29:11,452 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-13 18:29:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-13 18:29:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-11-13 18:29:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-11-13 18:29:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-13 18:29:11,453 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-13 18:29:11,453 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-13 18:29:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-13 18:29:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-13 18:29:11,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-13 18:29:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:29:11,454 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-13 18:29:11,455 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-13 18:29:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-11-13 18:29:11,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-11-13 18:29:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-11-13 18:29:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-11-13 18:29:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-13 18:29:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-13 18:29:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-13 18:29:11,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-13 18:29:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-13 18:29:11,461 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-13 18:29:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-13 18:29:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:29:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:29:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-13 18:29:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-13 18:29:13,076 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:29:27,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:29:27,042 INFO L299 CfgBuilder]: Removed 81 assume(true) statements. [2021-11-13 18:29:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:27 BoogieIcfgContainer [2021-11-13 18:29:27,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:29:27,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:29:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:29:27,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:29:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:29:05" (1/3) ... [2021-11-13 18:29:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de35cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:27, skipping insertion in model container [2021-11-13 18:29:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:29:10" (2/3) ... [2021-11-13 18:29:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de35cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:29:27, skipping insertion in model container [2021-11-13 18:29:27,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:29:27" (3/3) ... [2021-11-13 18:29:27,057 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 18:29:27,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:29:27,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:29:27,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:29:27,133 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 18:29:27,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:29:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 3635 states, 2087 states have (on average 1.3143267848586488) internal successors, (2743), 2242 states have internal predecessors, (2743), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-11-13 18:29:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 18:29:27,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:27,243 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-13 18:29:27,243 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1146511857, now seen corresponding path program 1 times [2021-11-13 18:29:27,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:29:27,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579699199] [2021-11-13 18:29:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:27,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:29:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:29:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:29:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:29:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:29:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:29:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:29:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:29:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:29:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:29:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 18:29:28,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:29:28,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579699199] [2021-11-13 18:29:28,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579699199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:28,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:28,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:29:28,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720272293] [2021-11-13 18:29:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:28,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:29:28,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:29:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:29:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:29:28,384 INFO L87 Difference]: Start difference. First operand has 3635 states, 2087 states have (on average 1.3143267848586488) internal successors, (2743), 2242 states have internal predecessors, (2743), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-13 18:29:30,539 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 18:29:32,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:34,810 WARN L515 Checker$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 18:29:38,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:40,960 WARN L515 Checker$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 18:29:44,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:46,432 WARN L515 Checker$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 18:29:51,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:54,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:56,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:30:12,338 INFO L93 Difference]: Finished difference Result 10779 states and 17210 transitions. [2021-11-13 18:30:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:30:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2021-11-13 18:30:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:30:12,445 INFO L225 Difference]: With dead ends: 10779 [2021-11-13 18:30:12,445 INFO L226 Difference]: Without dead ends: 7107 [2021-11-13 18:30:12,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:30:12,487 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 7647 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 6649 mSolverCounterSat, 10820 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39223.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8142 SdHoareTripleChecker+Valid, 10954 SdHoareTripleChecker+Invalid, 17477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 180.04ms SdHoareTripleChecker+Time, 10820 IncrementalHoareTripleChecker+Valid, 6649 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42700.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:30:12,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8142 Valid, 10954 Invalid, 17477 Unknown, 0 Unchecked, 180.04ms Time], IncrementalHoareTripleChecker [10820 Valid, 6649 Invalid, 8 Unknown, 0 Unchecked, 42700.84ms Time] [2021-11-13 18:30:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2021-11-13 18:30:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 6695. [2021-11-13 18:30:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6695 states, 3651 states have (on average 1.301287318542865) internal successors, (4751), 3791 states have internal predecessors, (4751), 2803 states have call successors, (2803), 241 states have call predecessors, (2803), 240 states have return successors, (2802), 2732 states have call predecessors, (2802), 2802 states have call successors, (2802) [2021-11-13 18:30:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 10356 transitions. [2021-11-13 18:30:13,398 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 10356 transitions. Word has length 78 [2021-11-13 18:30:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:13,399 INFO L470 AbstractCegarLoop]: Abstraction has 6695 states and 10356 transitions. [2021-11-13 18:30:13,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-13 18:30:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 10356 transitions. [2021-11-13 18:30:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 18:30:13,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:13,407 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-13 18:30:13,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:30:13,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash 673830489, now seen corresponding path program 1 times [2021-11-13 18:30:13,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:30:13,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717927726] [2021-11-13 18:30:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:13,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:30:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:30:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:30:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:30:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:30:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:30:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:30:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:30:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:30:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:30:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 18:30:14,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:30:14,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717927726] [2021-11-13 18:30:14,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717927726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:30:14,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:30:14,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:30:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735633217] [2021-11-13 18:30:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:30:14,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:30:14,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:30:14,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:30:14,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:30:14,221 INFO L87 Difference]: Start difference. First operand 6695 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:30:16,334 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 18:30:18,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:21,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:23,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:25,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:27,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:29,268 WARN L515 Checker$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 18:30:36,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:30:39,530 WARN L515 Checker$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 18:30:41,765 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 18:31:02,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:02,979 INFO L93 Difference]: Finished difference Result 20832 states and 32567 transitions. [2021-11-13 18:31:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:31:02,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-11-13 18:31:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:03,143 INFO L225 Difference]: With dead ends: 20832 [2021-11-13 18:31:03,144 INFO L226 Difference]: Without dead ends: 14154 [2021-11-13 18:31:03,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:31:03,293 INFO L933 BasicCegarLoop]: 5156 mSDtfsCounter, 7494 mSDsluCounter, 15606 mSDsCounter, 0 mSdLazyCounter, 12283 mSolverCounterSat, 10467 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43546.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 20762 SdHoareTripleChecker+Invalid, 22757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 185.38ms SdHoareTripleChecker+Time, 10467 IncrementalHoareTripleChecker+Valid, 12283 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47466.11ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:03,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7976 Valid, 20762 Invalid, 22757 Unknown, 0 Unchecked, 185.38ms Time], IncrementalHoareTripleChecker [10467 Valid, 12283 Invalid, 7 Unknown, 0 Unchecked, 47466.11ms Time] [2021-11-13 18:31:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14154 states. [2021-11-13 18:31:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14154 to 13488. [2021-11-13 18:31:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 7373 states have (on average 1.3025905330259053) internal successors, (9604), 7673 states have internal predecessors, (9604), 5616 states have call successors, (5616), 481 states have call predecessors, (5616), 498 states have return successors, (5782), 5487 states have call predecessors, (5782), 5615 states have call successors, (5782) [2021-11-13 18:31:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 21002 transitions. [2021-11-13 18:31:04,674 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 21002 transitions. Word has length 81 [2021-11-13 18:31:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:04,677 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 21002 transitions. [2021-11-13 18:31:04,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 18:31:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 21002 transitions. [2021-11-13 18:31:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-13 18:31:04,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:04,776 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:04,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:31:04,776 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:31:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:04,777 INFO L85 PathProgramCache]: Analyzing trace with hash -451464136, now seen corresponding path program 1 times [2021-11-13 18:31:04,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:04,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386206697] [2021-11-13 18:31:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:04,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:31:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:31:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:31:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:31:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:31:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:31:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:31:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:31:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:31:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:31:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:31:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:31:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 18:31:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:31:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-13 18:31:05,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:05,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386206697] [2021-11-13 18:31:05,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386206697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:05,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:05,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:31:05,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913492038] [2021-11-13 18:31:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:05,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:31:05,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:31:05,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:31:05,369 INFO L87 Difference]: Start difference. First operand 13488 states and 21002 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:31:07,471 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 18:31:09,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:11,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:12,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:14,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:17,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:19,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:26,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:28,469 WARN L515 Checker$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 18:31:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:31:42,886 INFO L93 Difference]: Finished difference Result 37710 states and 59166 transitions. [2021-11-13 18:31:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:31:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2021-11-13 18:31:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:31:43,068 INFO L225 Difference]: With dead ends: 37710 [2021-11-13 18:31:43,068 INFO L226 Difference]: Without dead ends: 24244 [2021-11-13 18:31:43,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:31:43,160 INFO L933 BasicCegarLoop]: 4471 mSDtfsCounter, 7653 mSDsluCounter, 6009 mSDsCounter, 0 mSdLazyCounter, 6222 mSolverCounterSat, 13159 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33153.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8783 SdHoareTripleChecker+Valid, 10480 SdHoareTripleChecker+Invalid, 19387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 97.31ms SdHoareTripleChecker+Time, 13159 IncrementalHoareTripleChecker+Valid, 6222 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36122.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:31:43,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8783 Valid, 10480 Invalid, 19387 Unknown, 0 Unchecked, 97.31ms Time], IncrementalHoareTripleChecker [13159 Valid, 6222 Invalid, 6 Unknown, 0 Unchecked, 36122.32ms Time] [2021-11-13 18:31:43,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24244 states. [2021-11-13 18:31:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24244 to 23296. [2021-11-13 18:31:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23296 states, 12317 states have (on average 1.3027522935779816) internal successors, (16046), 12807 states have internal predecessors, (16046), 10078 states have call successors, (10078), 857 states have call predecessors, (10078), 900 states have return successors, (10383), 9907 states have call predecessors, (10383), 10077 states have call successors, (10383) [2021-11-13 18:31:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23296 states to 23296 states and 36507 transitions. [2021-11-13 18:31:45,774 INFO L78 Accepts]: Start accepts. Automaton has 23296 states and 36507 transitions. Word has length 158 [2021-11-13 18:31:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:31:45,777 INFO L470 AbstractCegarLoop]: Abstraction has 23296 states and 36507 transitions. [2021-11-13 18:31:45,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:31:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 23296 states and 36507 transitions. [2021-11-13 18:31:45,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 18:31:45,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:31:45,809 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:31:45,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:31:45,809 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:31:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1345413806, now seen corresponding path program 1 times [2021-11-13 18:31:45,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:31:45,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510677214] [2021-11-13 18:31:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:45,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:31:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:46,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:31:46,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510677214] [2021-11-13 18:31:46,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:31:46,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804606571] [2021-11-13 18:31:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:31:46,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:31:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:31:46,106 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:31:46,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:31:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:31:47,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 4797 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:31:47,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:31:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:31:48,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:31:48,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804606571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:48,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:48,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:31:48,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599696394] [2021-11-13 18:31:48,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:48,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:31:48,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:31:48,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:31:48,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:31:48,359 INFO L87 Difference]: Start difference. First operand 23296 states and 36507 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:31:50,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:31:52,627 WARN L515 Checker$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 18:32:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:04,225 INFO L93 Difference]: Finished difference Result 69860 states and 109531 transitions. [2021-11-13 18:32:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:32:04,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 177 [2021-11-13 18:32:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:04,806 INFO L225 Difference]: With dead ends: 69860 [2021-11-13 18:32:04,806 INFO L226 Difference]: Without dead ends: 46586 [2021-11-13 18:32:04,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:04,979 INFO L933 BasicCegarLoop]: 6652 mSDtfsCounter, 5141 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 5679 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12042.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 5697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.87ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5679 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13678.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:04,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5145 Valid, 16572 Invalid, 5697 Unknown, 0 Unchecked, 55.87ms Time], IncrementalHoareTripleChecker [16 Valid, 5679 Invalid, 2 Unknown, 0 Unchecked, 13678.28ms Time] [2021-11-13 18:32:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46586 states. [2021-11-13 18:32:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46586 to 46578. [2021-11-13 18:32:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46578 states, 24623 states have (on average 1.3028875441660237) internal successors, (32081), 25611 states have internal predecessors, (32081), 20146 states have call successors, (20146), 1713 states have call predecessors, (20146), 1808 states have return successors, (20805), 19805 states have call predecessors, (20805), 20145 states have call successors, (20805) [2021-11-13 18:32:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46578 states to 46578 states and 73032 transitions. [2021-11-13 18:32:09,419 INFO L78 Accepts]: Start accepts. Automaton has 46578 states and 73032 transitions. Word has length 177 [2021-11-13 18:32:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:09,421 INFO L470 AbstractCegarLoop]: Abstraction has 46578 states and 73032 transitions. [2021-11-13 18:32:09,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:32:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 46578 states and 73032 transitions. [2021-11-13 18:32:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-13 18:32:09,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:09,445 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:09,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:09,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:09,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1720930785, now seen corresponding path program 1 times [2021-11-13 18:32:09,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:09,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511401434] [2021-11-13 18:32:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:09,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:09,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:09,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511401434] [2021-11-13 18:32:09,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:32:09,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069134397] [2021-11-13 18:32:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:09,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:09,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:09,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:09,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:32:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:11,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 4795 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:32:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:32:12,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:32:12,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069134397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:12,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:12,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:32:12,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973644050] [2021-11-13 18:32:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:12,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:32:12,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:32:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:32:12,242 INFO L87 Difference]: Start difference. First operand 46578 states and 73032 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:32:14,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:16,699 WARN L515 Checker$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 18:32:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:31,117 INFO L93 Difference]: Finished difference Result 139706 states and 219162 transitions. [2021-11-13 18:32:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:32:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 176 [2021-11-13 18:32:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:31,992 INFO L225 Difference]: With dead ends: 139706 [2021-11-13 18:32:31,993 INFO L226 Difference]: Without dead ends: 93150 [2021-11-13 18:32:32,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:32:32,219 INFO L933 BasicCegarLoop]: 6652 mSDtfsCounter, 5110 mSDsluCounter, 12859 mSDsCounter, 0 mSdLazyCounter, 5688 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12585.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 19511 SdHoareTripleChecker+Invalid, 5706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.80ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5688 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14532.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:32,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5114 Valid, 19511 Invalid, 5706 Unknown, 0 Unchecked, 86.80ms Time], IncrementalHoareTripleChecker [16 Valid, 5688 Invalid, 2 Unknown, 0 Unchecked, 14532.81ms Time] [2021-11-13 18:32:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93150 states. [2021-11-13 18:32:40,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93150 to 93142. [2021-11-13 18:32:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93142 states, 49235 states have (on average 1.3029552147862293) internal successors, (64151), 51219 states have internal predecessors, (64151), 40282 states have call successors, (40282), 3425 states have call predecessors, (40282), 3624 states have return successors, (41689), 39601 states have call predecessors, (41689), 40281 states have call successors, (41689) [2021-11-13 18:32:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93142 states to 93142 states and 146122 transitions. [2021-11-13 18:32:41,768 INFO L78 Accepts]: Start accepts. Automaton has 93142 states and 146122 transitions. Word has length 176 [2021-11-13 18:32:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:41,769 INFO L470 AbstractCegarLoop]: Abstraction has 93142 states and 146122 transitions. [2021-11-13 18:32:41,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:32:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 93142 states and 146122 transitions. [2021-11-13 18:32:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 18:32:41,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:41,792 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:41,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:42,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:42,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:42,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1952723066, now seen corresponding path program 1 times [2021-11-13 18:32:42,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:32:42,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990493093] [2021-11-13 18:32:42,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:42,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:32:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:42,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:32:42,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990493093] [2021-11-13 18:32:42,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:32:42,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552923152] [2021-11-13 18:32:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:42,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:32:42,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:32:42,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:32:42,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:32:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:43,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 4799 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:32:43,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:32:44,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:32:44,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552923152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:44,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:44,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:32:44,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003609847] [2021-11-13 18:32:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:32:44,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:32:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:32:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:32:44,536 INFO L87 Difference]: Start difference. First operand 93142 states and 146122 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:32:46,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:48,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:08,096 INFO L93 Difference]: Finished difference Result 279398 states and 438592 transitions. [2021-11-13 18:33:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:33:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2021-11-13 18:33:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:09,904 INFO L225 Difference]: With dead ends: 279398 [2021-11-13 18:33:09,904 INFO L226 Difference]: Without dead ends: 186278 [2021-11-13 18:33:10,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:33:10,369 INFO L933 BasicCegarLoop]: 6602 mSDtfsCounter, 5140 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 5679 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13030.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 16522 SdHoareTripleChecker+Invalid, 5697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.76ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5679 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15121.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:10,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 16522 Invalid, 5697 Unknown, 0 Unchecked, 54.76ms Time], IncrementalHoareTripleChecker [16 Valid, 5679 Invalid, 2 Unknown, 0 Unchecked, 15121.10ms Time] [2021-11-13 18:33:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186278 states. [2021-11-13 18:33:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186278 to 186270. [2021-11-13 18:33:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186270 states, 98459 states have (on average 1.30298906143674) internal successors, (128291), 102435 states have internal predecessors, (128291), 80554 states have call successors, (80554), 6849 states have call predecessors, (80554), 7256 states have return successors, (83585), 79193 states have call predecessors, (83585), 80553 states have call successors, (83585) [2021-11-13 18:33:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186270 states to 186270 states and 292430 transitions. [2021-11-13 18:33:28,509 INFO L78 Accepts]: Start accepts. Automaton has 186270 states and 292430 transitions. Word has length 178 [2021-11-13 18:33:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:28,510 INFO L470 AbstractCegarLoop]: Abstraction has 186270 states and 292430 transitions. [2021-11-13 18:33:28,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:33:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 186270 states and 292430 transitions. [2021-11-13 18:33:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 18:33:28,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:28,530 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:28,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:28,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 18:33:28,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1335531467, now seen corresponding path program 1 times [2021-11-13 18:33:28,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:33:28,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586736302] [2021-11-13 18:33:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:28,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:33:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:29,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:33:29,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586736302] [2021-11-13 18:33:29,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:33:29,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878203909] [2021-11-13 18:33:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:29,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:33:29,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:33:29,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:33:29,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2770b6d2-57b9-4e6f-89d0-e429a22e9dd9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:33:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:30,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 4793 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:33:30,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:33:31,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:33:31,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878203909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:31,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:31,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:33:31,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754830029] [2021-11-13 18:33:31,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:31,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:33:31,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:33:31,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:33:31,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:33:31,030 INFO L87 Difference]: Start difference. First operand 186270 states and 292430 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:33:33,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:35,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []