./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF --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 8a621364e853f6cea57e1b9be3d64dd0229cd7b56b8697c8ff667994a99ac7d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:02:55,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:02:55,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:02:55,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:02:55,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:02:55,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:02:55,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:02:55,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:02:55,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:02:55,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:02:55,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:02:55,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:02:55,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:02:55,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:02:55,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:02:55,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:02:55,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:02:55,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:02:55,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:02:55,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:02:55,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:02:55,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:02:55,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:02:55,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:02:55,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:02:55,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:02:55,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:02:55,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:02:55,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:02:55,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:02:55,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:02:55,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:02:55,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:02:55,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:02:55,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:02:55,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:02:55,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:02:55,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:02:55,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:02:55,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:02:55,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:02:55,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:02:55,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:02:55,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:02:55,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:02:55,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:02:55,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:02:55,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:02:55,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:02:55,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:02:55,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:02:55,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:02:55,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:02:55,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:02:55,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:02:55,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:02:55,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:02:55,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:02:55,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:02:55,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:02:55,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:02:55,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:02:55,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:02:55,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:02:55,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:02:55,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:02:55,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:02:55,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:02:55,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:02:55,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:02:55,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:02:55,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:02:55,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:02:55,364 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_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a621364e853f6cea57e1b9be3d64dd0229cd7b56b8697c8ff667994a99ac7d5 [2021-11-20 07:02:55,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:02:55,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:02:55,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:02:55,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:02:55,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:02:55,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-11-20 07:02:55,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/data/52ec5e30f/693c49a80b1b41d6bd1731b24c904aa9/FLAGc45cfc749 [2021-11-20 07:02:56,757 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:02:56,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-11-20 07:02:56,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/data/52ec5e30f/693c49a80b1b41d6bd1731b24c904aa9/FLAGc45cfc749 [2021-11-20 07:02:57,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/data/52ec5e30f/693c49a80b1b41d6bd1731b24c904aa9 [2021-11-20 07:02:57,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:02:57,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:02:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:02:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:02:57,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:02:57,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:57" (1/1) ... [2021-11-20 07:02:57,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3663e8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:02:57, skipping insertion in model container [2021-11-20 07:02:57,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:02:57" (1/1) ... [2021-11-20 07:02:57,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:02:57,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:02:59,869 WARN L230 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_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[297077,297090] [2021-11-20 07:02:59,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:02:59,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:03:00,693 WARN L230 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_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[297077,297090] [2021-11-20 07:03:00,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:03:00,862 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:03:00,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00 WrapperNode [2021-11-20 07:03:00,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:03:00,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:03:00,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:03:00,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:03:00,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,337 INFO L137 Inliner]: procedures = 357, calls = 3641, calls flagged for inlining = 134, calls inlined = 130, statements flattened = 6994 [2021-11-20 07:03:01,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:03:01,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:03:01,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:03:01,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:03:01,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:03:01,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:03:01,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:03:01,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:03:01,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (1/1) ... [2021-11-20 07:03:01,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:03:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:03:01,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:03:01,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd8c2b2-ac8f-4776-95ac-3540cb6d87b0/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:03:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 07:03:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 07:03:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2021-11-20 07:03:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2021-11-20 07:03:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2021-11-20 07:03:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2021-11-20 07:03:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2021-11-20 07:03:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2021-11-20 07:03:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 07:03:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 07:03:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2021-11-20 07:03:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2021-11-20 07:03:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2021-11-20 07:03:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2021-11-20 07:03:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2021-11-20 07:03:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2021-11-20 07:03:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 07:03:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 07:03:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 07:03:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 07:03:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 07:03:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 07:03:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2021-11-20 07:03:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2021-11-20 07:03:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 07:03:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 07:03:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2021-11-20 07:03:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2021-11-20 07:03:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2021-11-20 07:03:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2021-11-20 07:03:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2021-11-20 07:03:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2021-11-20 07:03:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2021-11-20 07:03:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2021-11-20 07:03:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-11-20 07:03:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-11-20 07:03:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2021-11-20 07:03:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2021-11-20 07:03:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-20 07:03:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-20 07:03:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2021-11-20 07:03:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2021-11-20 07:03:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2021-11-20 07:03:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2021-11-20 07:03:01,950 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2021-11-20 07:03:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2021-11-20 07:03:01,950 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2021-11-20 07:03:01,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2021-11-20 07:03:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-20 07:03:01,951 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-20 07:03:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2021-11-20 07:03:01,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2021-11-20 07:03:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 07:03:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 07:03:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 07:03:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 07:03:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2021-11-20 07:03:01,952 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2021-11-20 07:03:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2021-11-20 07:03:01,953 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2021-11-20 07:03:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2021-11-20 07:03:01,953 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2021-11-20 07:03:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2021-11-20 07:03:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2021-11-20 07:03:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-20 07:03:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-20 07:03:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2021-11-20 07:03:01,954 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2021-11-20 07:03:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2021-11-20 07:03:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2021-11-20 07:03:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:03:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:03:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2021-11-20 07:03:01,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2021-11-20 07:03:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 07:03:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 07:03:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2021-11-20 07:03:01,956 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2021-11-20 07:03:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2021-11-20 07:03:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2021-11-20 07:03:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2021-11-20 07:03:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2021-11-20 07:03:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2021-11-20 07:03:01,957 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2021-11-20 07:03:01,957 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2021-11-20 07:03:01,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2021-11-20 07:03:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2021-11-20 07:03:01,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2021-11-20 07:03:01,958 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2021-11-20 07:03:01,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2021-11-20 07:03:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:03:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 07:03:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 07:03:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2021-11-20 07:03:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2021-11-20 07:03:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2021-11-20 07:03:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2021-11-20 07:03:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2021-11-20 07:03:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2021-11-20 07:03:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:03:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 07:03:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 07:03:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-20 07:03:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-20 07:03:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 07:03:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 07:03:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-20 07:03:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-20 07:03:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2021-11-20 07:03:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2021-11-20 07:03:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:03:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2021-11-20 07:03:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2021-11-20 07:03:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:03:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2021-11-20 07:03:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2021-11-20 07:03:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2021-11-20 07:03:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2021-11-20 07:03:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2021-11-20 07:03:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2021-11-20 07:03:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2021-11-20 07:03:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2021-11-20 07:03:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 07:03:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 07:03:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 07:03:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 07:03:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-20 07:03:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-20 07:03:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 07:03:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 07:03:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2021-11-20 07:03:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2021-11-20 07:03:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2021-11-20 07:03:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2021-11-20 07:03:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 07:03:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 07:03:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2021-11-20 07:03:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2021-11-20 07:03:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-20 07:03:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-20 07:03:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2021-11-20 07:03:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2021-11-20 07:03:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 07:03:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2021-11-20 07:03:01,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2021-11-20 07:03:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2021-11-20 07:03:01,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2021-11-20 07:03:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2021-11-20 07:03:01,969 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2021-11-20 07:03:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2021-11-20 07:03:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2021-11-20 07:03:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 07:03:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 07:03:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 07:03:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2021-11-20 07:03:01,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2021-11-20 07:03:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-20 07:03:01,971 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-20 07:03:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2021-11-20 07:03:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2021-11-20 07:03:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:03:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2021-11-20 07:03:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2021-11-20 07:03:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2021-11-20 07:03:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2021-11-20 07:03:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2021-11-20 07:03:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2021-11-20 07:03:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 07:03:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 07:03:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2021-11-20 07:03:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2021-11-20 07:03:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-20 07:03:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-20 07:03:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-20 07:03:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-20 07:03:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2021-11-20 07:03:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2021-11-20 07:03:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 07:03:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 07:03:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2021-11-20 07:03:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2021-11-20 07:03:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2021-11-20 07:03:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2021-11-20 07:03:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2021-11-20 07:03:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2021-11-20 07:03:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 07:03:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 07:03:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2021-11-20 07:03:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2021-11-20 07:03:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2021-11-20 07:03:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2021-11-20 07:03:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2021-11-20 07:03:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2021-11-20 07:03:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 07:03:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 07:03:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:03:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 07:03:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 07:03:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2021-11-20 07:03:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2021-11-20 07:03:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 07:03:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 07:03:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2021-11-20 07:03:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2021-11-20 07:03:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2021-11-20 07:03:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2021-11-20 07:03:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:03:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2021-11-20 07:03:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2021-11-20 07:03:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-20 07:03:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2021-11-20 07:03:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2021-11-20 07:03:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-20 07:03:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-20 07:03:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2021-11-20 07:03:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2021-11-20 07:03:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:03:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2021-11-20 07:03:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2021-11-20 07:03:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2021-11-20 07:03:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2021-11-20 07:03:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:03:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2021-11-20 07:03:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2021-11-20 07:03:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2021-11-20 07:03:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2021-11-20 07:03:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2021-11-20 07:03:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2021-11-20 07:03:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2021-11-20 07:03:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2021-11-20 07:03:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2021-11-20 07:03:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2021-11-20 07:03:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2021-11-20 07:03:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2021-11-20 07:03:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2021-11-20 07:03:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2021-11-20 07:03:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2021-11-20 07:03:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2021-11-20 07:03:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2021-11-20 07:03:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2021-11-20 07:03:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2021-11-20 07:03:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2021-11-20 07:03:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 07:03:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 07:03:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2021-11-20 07:03:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2021-11-20 07:03:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-20 07:03:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-20 07:03:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2021-11-20 07:03:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2021-11-20 07:03:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 07:03:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 07:03:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2021-11-20 07:03:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2021-11-20 07:03:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 07:03:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 07:03:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2021-11-20 07:03:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2021-11-20 07:03:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2021-11-20 07:03:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2021-11-20 07:03:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 07:03:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 07:03:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:03:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2021-11-20 07:03:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2021-11-20 07:03:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:03:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:03:01,990 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2021-11-20 07:03:01,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2021-11-20 07:03:03,261 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:03:03,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:03:03,820 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 07:03:28,014 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:03:28,036 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:03:28,036 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:03:28,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:03:28 BoogieIcfgContainer [2021-11-20 07:03:28,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:03:28,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:03:28,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:03:28,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:03:28,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:02:57" (1/3) ... [2021-11-20 07:03:28,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f66af62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:03:28, skipping insertion in model container [2021-11-20 07:03:28,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:03:00" (2/3) ... [2021-11-20 07:03:28,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f66af62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:03:28, skipping insertion in model container [2021-11-20 07:03:28,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:03:28" (3/3) ... [2021-11-20 07:03:28,050 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-11-20 07:03:28,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:03:28,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:03:28,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:03:28,123 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 [2021-11-20 07:03:28,123 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:03:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 1665 states have (on average 1.330930930930931) internal successors, (2216), 1703 states have internal predecessors, (2216), 664 states have call successors, (664), 126 states have call predecessors, (664), 125 states have return successors, (658), 654 states have call predecessors, (658), 658 states have call successors, (658) [2021-11-20 07:03:28,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-20 07:03:28,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:03:28,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 07:03:28,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:03:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2034179201, now seen corresponding path program 1 times [2021-11-20 07:03:28,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:28,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079521075] [2021-11-20 07:03:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:28,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:03:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:03:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:03:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:03:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:03:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:03:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:03:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 07:03:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:03:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:03:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:03:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:03:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:03:29,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:29,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079521075] [2021-11-20 07:03:29,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079521075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:29,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:29,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:03:29,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255960895] [2021-11-20 07:03:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:29,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:03:29,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:29,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:03:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:03:29,107 INFO L87 Difference]: Start difference. First operand has 2456 states, 1665 states have (on average 1.330930930930931) internal successors, (2216), 1703 states have internal predecessors, (2216), 664 states have call successors, (664), 126 states have call predecessors, (664), 125 states have return successors, (658), 654 states have call predecessors, (658), 658 states have call successors, (658) Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 07:03:33,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:36,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:43,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:47,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:50,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:51,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:03:58,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:00,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:06,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:04:09,843 INFO L93 Difference]: Finished difference Result 7664 states and 11673 transitions. [2021-11-20 07:04:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:04:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2021-11-20 07:04:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:04:09,933 INFO L225 Difference]: With dead ends: 7664 [2021-11-20 07:04:09,933 INFO L226 Difference]: Without dead ends: 5184 [2021-11-20 07:04:09,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:04:09,974 INFO L933 BasicCegarLoop]: 4017 mSDtfsCounter, 5838 mSDsluCounter, 4969 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 5255 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6331 SdHoareTripleChecker+Valid, 8986 SdHoareTripleChecker+Invalid, 8677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5255 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:04:09,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6331 Valid, 8986 Invalid, 8677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5255 Valid, 3419 Invalid, 3 Unknown, 0 Unchecked, 39.8s Time] [2021-11-20 07:04:10,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2021-11-20 07:04:10,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4183. [2021-11-20 07:04:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4183 states, 2837 states have (on average 1.3249911878745153) internal successors, (3759), 2889 states have internal predecessors, (3759), 1117 states have call successors, (1117), 229 states have call predecessors, (1117), 228 states have return successors, (1116), 1108 states have call predecessors, (1116), 1116 states have call successors, (1116) [2021-11-20 07:04:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4183 states to 4183 states and 5992 transitions. [2021-11-20 07:04:10,518 INFO L78 Accepts]: Start accepts. Automaton has 4183 states and 5992 transitions. Word has length 107 [2021-11-20 07:04:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:04:10,519 INFO L470 AbstractCegarLoop]: Abstraction has 4183 states and 5992 transitions. [2021-11-20 07:04:10,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 07:04:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4183 states and 5992 transitions. [2021-11-20 07:04:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-20 07:04:10,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:04:10,531 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:04:10,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:04:10,532 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:04:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:04:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1370606477, now seen corresponding path program 1 times [2021-11-20 07:04:10,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:04:10,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414216259] [2021-11-20 07:04:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:04:10,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:04:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:04:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:04:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:04:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:04:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:04:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 07:04:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 07:04:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:04:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:04:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:04:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 07:04:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:04:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 07:04:11,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:04:11,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414216259] [2021-11-20 07:04:11,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414216259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:04:11,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:04:11,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:04:11,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880731969] [2021-11-20 07:04:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:04:11,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:04:11,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:04:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:04:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:04:11,109 INFO L87 Difference]: Start difference. First operand 4183 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 07:04:17,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:19,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:23,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:26,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:28,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:31,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:36,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:40,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:44,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:46,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:52,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:04:55,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:03,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:05,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:06,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:08,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:12,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:19,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:21,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:25,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:26,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:29,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:31,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:32,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:05:34,676 INFO L93 Difference]: Finished difference Result 12520 states and 18227 transitions. [2021-11-20 07:05:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:05:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2021-11-20 07:05:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:05:34,774 INFO L225 Difference]: With dead ends: 12520 [2021-11-20 07:05:34,774 INFO L226 Difference]: Without dead ends: 8345 [2021-11-20 07:05:34,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:05:34,808 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 6620 mSDsluCounter, 8494 mSDsCounter, 0 mSdLazyCounter, 6668 mSolverCounterSat, 5480 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7209 SdHoareTripleChecker+Valid, 13053 SdHoareTripleChecker+Invalid, 12155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5480 IncrementalHoareTripleChecker+Valid, 6668 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:05:34,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7209 Valid, 13053 Invalid, 12155 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5480 Valid, 6668 Invalid, 7 Unknown, 0 Unchecked, 82.6s Time] [2021-11-20 07:05:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2021-11-20 07:05:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 6798. [2021-11-20 07:05:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6798 states, 4600 states have (on average 1.3182608695652174) internal successors, (6064), 4685 states have internal predecessors, (6064), 1804 states have call successors, (1804), 388 states have call predecessors, (1804), 393 states have return successors, (1829), 1795 states have call predecessors, (1829), 1803 states have call successors, (1829) [2021-11-20 07:05:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6798 states to 6798 states and 9697 transitions. [2021-11-20 07:05:35,529 INFO L78 Accepts]: Start accepts. Automaton has 6798 states and 9697 transitions. Word has length 99 [2021-11-20 07:05:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:05:35,532 INFO L470 AbstractCegarLoop]: Abstraction has 6798 states and 9697 transitions. [2021-11-20 07:05:35,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-20 07:05:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6798 states and 9697 transitions. [2021-11-20 07:05:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 07:05:35,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:05:35,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 07:05:35,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:05:35,557 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:05:35,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:05:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1569697148, now seen corresponding path program 1 times [2021-11-20 07:05:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:05:35,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464026790] [2021-11-20 07:05:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:05:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:05:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:05:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:05:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:05:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 07:05:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:05:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:05:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:05:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:05:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 07:05:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:05:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:05:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:05:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:05:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:05:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:05:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 07:05:36,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:05:36,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464026790] [2021-11-20 07:05:36,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464026790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:05:36,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:05:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 07:05:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554378633] [2021-11-20 07:05:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:05:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:05:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:05:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:05:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:05:36,259 INFO L87 Difference]: Start difference. First operand 6798 states and 9697 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 07:05:41,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:43,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:45,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:47,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:50,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:05:52,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:00,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:05,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:08,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:09,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:11,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:13,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:14,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:21,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:22,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:23,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:27,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:06:32,080 INFO L93 Difference]: Finished difference Result 15121 states and 21916 transitions. [2021-11-20 07:06:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:06:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2021-11-20 07:06:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:06:32,167 INFO L225 Difference]: With dead ends: 15121 [2021-11-20 07:06:32,167 INFO L226 Difference]: Without dead ends: 8326 [2021-11-20 07:06:32,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:06:32,214 INFO L933 BasicCegarLoop]: 3094 mSDtfsCounter, 2808 mSDsluCounter, 8371 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 3164 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 11465 SdHoareTripleChecker+Invalid, 7521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3164 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:06:32,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 11465 Invalid, 7521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3164 Valid, 4348 Invalid, 9 Unknown, 0 Unchecked, 55.2s Time] [2021-11-20 07:06:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2021-11-20 07:06:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 6776. [2021-11-20 07:06:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 4582 states have (on average 1.3177651680488869) internal successors, (6038), 4667 states have internal predecessors, (6038), 1801 states have call successors, (1801), 387 states have call predecessors, (1801), 392 states have return successors, (1826), 1792 states have call predecessors, (1826), 1800 states have call successors, (1826) [2021-11-20 07:06:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 9665 transitions. [2021-11-20 07:06:32,783 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 9665 transitions. Word has length 131 [2021-11-20 07:06:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:06:32,785 INFO L470 AbstractCegarLoop]: Abstraction has 6776 states and 9665 transitions. [2021-11-20 07:06:32,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-20 07:06:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 9665 transitions. [2021-11-20 07:06:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 07:06:32,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:06:32,804 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 07:06:32,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:06:32,805 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:06:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2011288551, now seen corresponding path program 1 times [2021-11-20 07:06:32,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:06:32,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377902675] [2021-11-20 07:06:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:32,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:06:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:06:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:06:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:06:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:06:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:06:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:06:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:06:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:06:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:06:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:06:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:06:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:06:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:06:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:06:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:06:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:06:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 07:06:33,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:06:33,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377902675] [2021-11-20 07:06:33,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377902675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:06:33,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:06:33,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:06:33,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799395365] [2021-11-20 07:06:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:06:33,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:06:33,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:06:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:06:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:06:33,431 INFO L87 Difference]: Start difference. First operand 6776 states and 9665 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:06:39,328 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 [] [2021-11-20 07:06:41,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:43,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:46,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:06:49,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:02,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:10,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:11,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:13,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:15,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:17,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:25,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:27,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:32,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:35,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:37,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:46,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:07:46,714 INFO L93 Difference]: Finished difference Result 23357 states and 34010 transitions. [2021-11-20 07:07:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:07:46,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2021-11-20 07:07:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:07:46,914 INFO L225 Difference]: With dead ends: 23357 [2021-11-20 07:07:46,914 INFO L226 Difference]: Without dead ends: 16594 [2021-11-20 07:07:46,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:07:46,946 INFO L933 BasicCegarLoop]: 5034 mSDtfsCounter, 5946 mSDsluCounter, 12107 mSDsCounter, 0 mSdLazyCounter, 6796 mSolverCounterSat, 4087 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6573 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 10890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4087 IncrementalHoareTripleChecker+Valid, 6796 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:07:46,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6573 Valid, 17141 Invalid, 10890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4087 Valid, 6796 Invalid, 7 Unknown, 0 Unchecked, 72.3s Time] [2021-11-20 07:07:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16594 states. [2021-11-20 07:07:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16594 to 13501. [2021-11-20 07:07:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13501 states, 9125 states have (on average 1.3175890410958904) internal successors, (12023), 9295 states have internal predecessors, (12023), 3593 states have call successors, (3593), 771 states have call predecessors, (3593), 782 states have return successors, (3644), 3576 states have call predecessors, (3644), 3592 states have call successors, (3644) [2021-11-20 07:07:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 19260 transitions. [2021-11-20 07:07:47,840 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 19260 transitions. Word has length 140 [2021-11-20 07:07:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:07:47,841 INFO L470 AbstractCegarLoop]: Abstraction has 13501 states and 19260 transitions. [2021-11-20 07:07:47,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:07:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 19260 transitions. [2021-11-20 07:07:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 07:07:47,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:07:47,857 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 07:07:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:07:47,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:07:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:07:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1245094171, now seen corresponding path program 1 times [2021-11-20 07:07:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:07:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178077719] [2021-11-20 07:07:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:07:47,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:07:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:07:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:07:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:07:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:07:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:07:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:07:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:07:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:07:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:07:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:07:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:07:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:07:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:07:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:07:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:07:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:07:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 07:07:48,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:07:48,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178077719] [2021-11-20 07:07:48,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178077719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:07:48,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:07:48,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:07:48,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106279009] [2021-11-20 07:07:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:07:48,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:07:48,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:07:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:07:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:07:48,393 INFO L87 Difference]: Start difference. First operand 13501 states and 19260 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:07:53,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:07:55,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:05,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:06,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:09,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:11,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:13,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:20,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:25,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:27,289 INFO L93 Difference]: Finished difference Result 22458 states and 32284 transitions. [2021-11-20 07:08:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:08:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2021-11-20 07:08:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:27,334 INFO L225 Difference]: With dead ends: 22458 [2021-11-20 07:08:27,334 INFO L226 Difference]: Without dead ends: 8970 [2021-11-20 07:08:27,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:08:27,381 INFO L933 BasicCegarLoop]: 3136 mSDtfsCounter, 1767 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 3271 mSolverCounterSat, 1940 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 8804 SdHoareTripleChecker+Invalid, 5214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1940 IncrementalHoareTripleChecker+Valid, 3271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:27,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 8804 Invalid, 5214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1940 Valid, 3271 Invalid, 3 Unknown, 0 Unchecked, 38.3s Time] [2021-11-20 07:08:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2021-11-20 07:08:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 7340. [2021-11-20 07:08:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7340 states, 4965 states have (on average 1.313595166163142) internal successors, (6522), 5061 states have internal predecessors, (6522), 1921 states have call successors, (1921), 448 states have call predecessors, (1921), 453 states have return successors, (1946), 1912 states have call predecessors, (1946), 1920 states have call successors, (1946) [2021-11-20 07:08:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7340 states to 7340 states and 10389 transitions. [2021-11-20 07:08:27,818 INFO L78 Accepts]: Start accepts. Automaton has 7340 states and 10389 transitions. Word has length 140 [2021-11-20 07:08:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:27,818 INFO L470 AbstractCegarLoop]: Abstraction has 7340 states and 10389 transitions. [2021-11-20 07:08:27,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 07:08:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7340 states and 10389 transitions. [2021-11-20 07:08:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-20 07:08:27,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:27,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:08:27,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:08:27,838 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -82410969, now seen corresponding path program 1 times [2021-11-20 07:08:27,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:27,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304477854] [2021-11-20 07:08:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:27,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:08:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:08:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:08:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:08:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:08:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:08:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:08:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:08:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:08:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:08:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:08:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 07:08:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:08:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:08:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:08:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:08:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:08:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:08:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-20 07:08:28,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:28,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304477854] [2021-11-20 07:08:28,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304477854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:28,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:28,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:08:28,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648618595] [2021-11-20 07:08:28,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:28,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:08:28,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:28,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:08:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:08:28,283 INFO L87 Difference]: Start difference. First operand 7340 states and 10389 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:08:33,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:35,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:38,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:40,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:42,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:48,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:50,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:53,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:08:55,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:00,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:03,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:04,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:11,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:17,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:24,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:27,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:28,683 INFO L93 Difference]: Finished difference Result 19605 states and 28323 transitions. [2021-11-20 07:09:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:09:28,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 157 [2021-11-20 07:09:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:28,745 INFO L225 Difference]: With dead ends: 19605 [2021-11-20 07:09:28,745 INFO L226 Difference]: Without dead ends: 12848 [2021-11-20 07:09:28,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:09:28,771 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 5526 mSDsluCounter, 5895 mSDsCounter, 0 mSdLazyCounter, 4671 mSolverCounterSat, 3972 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 10310 SdHoareTripleChecker+Invalid, 8655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3972 IncrementalHoareTripleChecker+Valid, 4671 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:28,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6109 Valid, 10310 Invalid, 8655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3972 Valid, 4671 Invalid, 12 Unknown, 0 Unchecked, 59.7s Time] [2021-11-20 07:09:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2021-11-20 07:09:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 10457. [2021-11-20 07:09:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10457 states, 7061 states have (on average 1.3111457300665628) internal successors, (9258), 7198 states have internal predecessors, (9258), 2741 states have call successors, (2741), 646 states have call predecessors, (2741), 654 states have return successors, (2780), 2730 states have call predecessors, (2780), 2740 states have call successors, (2780) [2021-11-20 07:09:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 14779 transitions. [2021-11-20 07:09:29,491 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 14779 transitions. Word has length 157 [2021-11-20 07:09:29,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:29,492 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 14779 transitions. [2021-11-20 07:09:29,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (26), 5 states have call predecessors, (26), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:09:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 14779 transitions. [2021-11-20 07:09:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-20 07:09:29,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:29,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 07:09:29,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:09:29,511 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1553948647, now seen corresponding path program 1 times [2021-11-20 07:09:29,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:29,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635400655] [2021-11-20 07:09:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:29,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:09:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:09:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:09:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:09:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:09:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:09:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:09:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:09:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:09:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:09:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 07:09:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:09:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:09:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:09:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:09:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:09:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 07:09:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-20 07:09:29,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635400655] [2021-11-20 07:09:29,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635400655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:29,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:29,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:29,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780709844] [2021-11-20 07:09:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:29,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:29,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:29,967 INFO L87 Difference]: Start difference. First operand 10457 states and 14779 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:09:37,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:39,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:41,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:43,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:46,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:49,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:51,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:53,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:55,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:09:58,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:05,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:09,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:11,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:14,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:21,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:29,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:30,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:34,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:43,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:45,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:47,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:10:49,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:04,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:09,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:16,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:18,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:11:20,647 INFO L93 Difference]: Finished difference Result 27587 states and 39810 transitions. [2021-11-20 07:11:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:11:20,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 149 [2021-11-20 07:11:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:11:20,725 INFO L225 Difference]: With dead ends: 27587 [2021-11-20 07:11:20,725 INFO L226 Difference]: Without dead ends: 17713 [2021-11-20 07:11:20,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:11:20,756 INFO L933 BasicCegarLoop]: 4982 mSDtfsCounter, 4268 mSDsluCounter, 10863 mSDsCounter, 0 mSdLazyCounter, 9112 mSolverCounterSat, 2310 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 15845 SdHoareTripleChecker+Invalid, 11440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2310 IncrementalHoareTripleChecker+Valid, 9112 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:11:20,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4867 Valid, 15845 Invalid, 11440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2310 Valid, 9112 Invalid, 18 Unknown, 0 Unchecked, 109.6s Time] [2021-11-20 07:11:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17713 states. [2021-11-20 07:11:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17713 to 14428. [2021-11-20 07:11:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14428 states, 9764 states have (on average 1.3104260548955347) internal successors, (12795), 9952 states have internal predecessors, (12795), 3765 states have call successors, (3765), 890 states have call predecessors, (3765), 898 states have return successors, (3806), 3750 states have call predecessors, (3806), 3764 states have call successors, (3806) [2021-11-20 07:11:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14428 states to 14428 states and 20366 transitions. [2021-11-20 07:11:21,611 INFO L78 Accepts]: Start accepts. Automaton has 14428 states and 20366 transitions. Word has length 149 [2021-11-20 07:11:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:11:21,611 INFO L470 AbstractCegarLoop]: Abstraction has 14428 states and 20366 transitions. [2021-11-20 07:11:21,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 07:11:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14428 states and 20366 transitions. [2021-11-20 07:11:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 07:11:21,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:11:21,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:11:21,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:11:21,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:11:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:11:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1975612218, now seen corresponding path program 1 times [2021-11-20 07:11:21,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:11:21,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759007765] [2021-11-20 07:11:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:11:21,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:11:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:11:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 07:11:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:11:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:11:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-20 07:11:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 07:11:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:11:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:11:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:11:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:11:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:11:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:11:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:11:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:11:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:11:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:11:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:11:22,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:11:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759007765] [2021-11-20 07:11:22,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759007765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:11:22,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:11:22,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:11:22,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043889984] [2021-11-20 07:11:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:11:22,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:11:22,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:11:22,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:11:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:11:22,152 INFO L87 Difference]: Start difference. First operand 14428 states and 20366 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 07:11:26,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:29,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:33,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:36,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:41,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:46,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:47,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:49,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:11:58,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:04,402 INFO L93 Difference]: Finished difference Result 32109 states and 46306 transitions. [2021-11-20 07:12:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:12:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2021-11-20 07:12:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:04,512 INFO L225 Difference]: With dead ends: 32109 [2021-11-20 07:12:04,513 INFO L226 Difference]: Without dead ends: 17696 [2021-11-20 07:12:04,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:12:04,570 INFO L933 BasicCegarLoop]: 3080 mSDtfsCounter, 1751 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 3803 mSolverCounterSat, 1942 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 8917 SdHoareTripleChecker+Invalid, 5749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1942 IncrementalHoareTripleChecker+Valid, 3803 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:04,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2043 Valid, 8917 Invalid, 5749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1942 Valid, 3803 Invalid, 4 Unknown, 0 Unchecked, 41.5s Time] [2021-11-20 07:12:04,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17696 states. [2021-11-20 07:12:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17696 to 14438. [2021-11-20 07:12:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14438 states, 9774 states have (on average 1.3101084509924288) internal successors, (12805), 9962 states have internal predecessors, (12805), 3765 states have call successors, (3765), 890 states have call predecessors, (3765), 898 states have return successors, (3806), 3750 states have call predecessors, (3806), 3764 states have call successors, (3806) [2021-11-20 07:12:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14438 states to 14438 states and 20376 transitions. [2021-11-20 07:12:05,674 INFO L78 Accepts]: Start accepts. Automaton has 14438 states and 20376 transitions. Word has length 152 [2021-11-20 07:12:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:05,674 INFO L470 AbstractCegarLoop]: Abstraction has 14438 states and 20376 transitions. [2021-11-20 07:12:05,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 07:12:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14438 states and 20376 transitions. [2021-11-20 07:12:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-20 07:12:05,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:12:05,693 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:12:05,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:12:05,693 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:12:05,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:12:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1287165835, now seen corresponding path program 1 times [2021-11-20 07:12:05,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:12:05,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104756945] [2021-11-20 07:12:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:12:05,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:12:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:12:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:12:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:12:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:12:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-20 07:12:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:12:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-20 07:12:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:12:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:12:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:12:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:12:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:12:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:12:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:12:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 07:12:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:12:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 07:12:06,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:12:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104756945] [2021-11-20 07:12:06,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104756945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:12:06,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:12:06,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:12:06,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178569141] [2021-11-20 07:12:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:12:06,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:12:06,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:12:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:12:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:12:06,304 INFO L87 Difference]: Start difference. First operand 14438 states and 20376 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 07:12:10,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:16,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:19,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:20,150 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:25,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:12:29,671 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 [] [2021-11-20 07:12:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:12:30,101 INFO L93 Difference]: Finished difference Result 17696 states and 25704 transitions. [2021-11-20 07:12:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:12:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2021-11-20 07:12:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:12:30,105 INFO L225 Difference]: With dead ends: 17696 [2021-11-20 07:12:30,105 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:12:30,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:12:30,152 INFO L933 BasicCegarLoop]: 3049 mSDtfsCounter, 5948 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 4245 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6274 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 5981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4245 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:12:30,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6274 Valid, 4654 Invalid, 5981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4245 Valid, 1734 Invalid, 2 Unknown, 0 Unchecked, 23.1s Time] [2021-11-20 07:12:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:12:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:12:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:12:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:12:30,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2021-11-20 07:12:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:12:30,158 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:12:30,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 07:12:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:12:30,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:12:30,161 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:12:30,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:12:30,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.