./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa --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 d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:43:16,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:43:16,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:43:16,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:43:16,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:43:16,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:43:16,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:43:16,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:43:16,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:43:16,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:43:16,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:43:16,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:43:16,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:43:16,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:43:16,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:43:16,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:43:16,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:43:16,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:43:16,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:43:16,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:43:16,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:43:16,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:43:16,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:43:16,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:43:16,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:43:16,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:43:16,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:43:16,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:43:16,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:43:16,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:43:16,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:43:16,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:43:16,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:43:16,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:43:16,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:43:16,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:43:16,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:43:16,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:43:16,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:43:16,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:43:16,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:43:16,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 17:43:16,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:43:16,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:43:16,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:43:16,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:43:16,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:43:16,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:43:16,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:43:16,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:43:16,299 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:43:16,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:43:16,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:43:16,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:43:16,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:43:16,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:43:16,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:43:16,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:43:16,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:43:16,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:43:16,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:43:16,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:43:16,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:43:16,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:43:16,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:43:16,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:43:16,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:43:16,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:43:16,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:43:16,302 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:43:16,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:43:16,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:43:16,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:43:16,303 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_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2021-12-06 17:43:16,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:43:16,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:43:16,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:43:16,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:43:16,499 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:43:16,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-12-06 17:43:16,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/data/dc74555bf/4580a97b10024282b6a8a0ce4a373602/FLAG0b60453ec [2021-12-06 17:43:17,168 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:43:17,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-12-06 17:43:17,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/data/dc74555bf/4580a97b10024282b6a8a0ce4a373602/FLAG0b60453ec [2021-12-06 17:43:17,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/data/dc74555bf/4580a97b10024282b6a8a0ce4a373602 [2021-12-06 17:43:17,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:43:17,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:43:17,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:43:17,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:43:17,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:43:17,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:17" (1/1) ... [2021-12-06 17:43:17,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5e14bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:17, skipping insertion in model container [2021-12-06 17:43:17,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:17" (1/1) ... [2021-12-06 17:43:17,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:43:17,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:43:19,654 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_5ff30536-1251-4b31-b90e-c978da50a304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2021-12-06 17:43:19,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:43:19,869 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:43:20,196 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_5ff30536-1251-4b31-b90e-c978da50a304/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i[312804,312817] [2021-12-06 17:43:20,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:43:20,302 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:43:20,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20 WrapperNode [2021-12-06 17:43:20,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:43:20,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:43:20,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:43:20,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:43:20,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,544 INFO L137 Inliner]: procedures = 480, calls = 3867, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7270 [2021-12-06 17:43:20,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:43:20,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:43:20,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:43:20,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:43:20,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:43:20,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:43:20,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:43:20,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:43:20,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (1/1) ... [2021-12-06 17:43:20,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:43:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:43:20,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:43:20,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff30536-1251-4b31-b90e-c978da50a304/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:43:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2021-12-06 17:43:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2021-12-06 17:43:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2021-12-06 17:43:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2021-12-06 17:43:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2021-12-06 17:43:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2021-12-06 17:43:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 17:43:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2021-12-06 17:43:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2021-12-06 17:43:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-06 17:43:20,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-06 17:43:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2021-12-06 17:43:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2021-12-06 17:43:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2021-12-06 17:43:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2021-12-06 17:43:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-12-06 17:43:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2021-12-06 17:43:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2021-12-06 17:43:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:43:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2021-12-06 17:43:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2021-12-06 17:43:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2021-12-06 17:43:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2021-12-06 17:43:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 17:43:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 17:43:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-06 17:43:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-06 17:43:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2021-12-06 17:43:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2021-12-06 17:43:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2021-12-06 17:43:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2021-12-06 17:43:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:43:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:43:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-06 17:43:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-06 17:43:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 17:43:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 17:43:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2021-12-06 17:43:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 17:43:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:43:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2021-12-06 17:43:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-06 17:43:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-06 17:43:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-06 17:43:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-06 17:43:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2021-12-06 17:43:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-06 17:43:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 17:43:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2021-12-06 17:43:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2021-12-06 17:43:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2021-12-06 17:43:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2021-12-06 17:43:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2021-12-06 17:43:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2021-12-06 17:43:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2021-12-06 17:43:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2021-12-06 17:43:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2021-12-06 17:43:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2021-12-06 17:43:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2021-12-06 17:43:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:43:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2021-12-06 17:43:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2021-12-06 17:43:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2021-12-06 17:43:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2021-12-06 17:43:21,597 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:43:21,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:43:21,987 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 17:43:34,822 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:43:34,843 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:43:34,843 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 17:43:34,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:34 BoogieIcfgContainer [2021-12-06 17:43:34,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:43:34,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:43:34,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:43:34,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:43:34,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:43:17" (1/3) ... [2021-12-06 17:43:34,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360b706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:34, skipping insertion in model container [2021-12-06 17:43:34,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:20" (2/3) ... [2021-12-06 17:43:34,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3360b706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:34, skipping insertion in model container [2021-12-06 17:43:34,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:34" (3/3) ... [2021-12-06 17:43:34,854 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-12-06 17:43:34,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:43:34,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:43:34,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:43:34,912 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 [2021-12-06 17:43:34,912 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:43:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 2542 states, 1707 states have (on average 1.328646748681898) internal successors, (2268), 1754 states have internal predecessors, (2268), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) [2021-12-06 17:43:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 17:43:34,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:34,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:34,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1765604170, now seen corresponding path program 1 times [2021-12-06 17:43:34,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:34,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288868917] [2021-12-06 17:43:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:35,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:43:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:43:35,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:35,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288868917] [2021-12-06 17:43:35,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288868917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:35,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:35,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:43:35,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048986355] [2021-12-06 17:43:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:35,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:43:35,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:43:35,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:43:35,559 INFO L87 Difference]: Start difference. First operand has 2542 states, 1707 states have (on average 1.328646748681898) internal successors, (2268), 1754 states have internal predecessors, (2268), 701 states have call successors, (701), 133 states have call predecessors, (701), 132 states have return successors, (695), 691 states have call predecessors, (695), 695 states have call successors, (695) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:43:38,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:43:40,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:43:50,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:43:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:43:59,184 INFO L93 Difference]: Finished difference Result 5694 states and 8677 transitions. [2021-12-06 17:43:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:43:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-12-06 17:43:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:43:59,227 INFO L225 Difference]: With dead ends: 5694 [2021-12-06 17:43:59,228 INFO L226 Difference]: Without dead ends: 3144 [2021-12-06 17:43:59,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:43:59,251 INFO L933 BasicCegarLoop]: 3380 mSDtfsCounter, 1110 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 989 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:43:59,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 6269 Invalid, 3296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [989 Valid, 2305 Invalid, 2 Unknown, 0 Unchecked, 23.2s Time] [2021-12-06 17:43:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2021-12-06 17:43:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2529. [2021-12-06 17:43:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 1702 states have (on average 1.3243243243243243) internal successors, (2254), 1741 states have internal predecessors, (2254), 695 states have call successors, (695), 132 states have call predecessors, (695), 131 states have return successors, (684), 680 states have call predecessors, (684), 684 states have call successors, (684) [2021-12-06 17:43:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3633 transitions. [2021-12-06 17:43:59,493 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3633 transitions. Word has length 35 [2021-12-06 17:43:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:43:59,493 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 3633 transitions. [2021-12-06 17:43:59,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:43:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3633 transitions. [2021-12-06 17:43:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 17:43:59,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:43:59,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:43:59,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:43:59,496 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:43:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:43:59,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1899617676, now seen corresponding path program 1 times [2021-12-06 17:43:59,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:43:59,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606009705] [2021-12-06 17:43:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:43:59,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:43:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:43:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:43:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:43:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:43:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:43:59,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:43:59,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606009705] [2021-12-06 17:43:59,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606009705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:43:59,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:43:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:43:59,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165522686] [2021-12-06 17:43:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:43:59,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:43:59,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:43:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:43:59,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:43:59,724 INFO L87 Difference]: Start difference. First operand 2529 states and 3633 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:44:03,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:13,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:15,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:16,416 INFO L93 Difference]: Finished difference Result 3197 states and 4706 transitions. [2021-12-06 17:44:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:44:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-06 17:44:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:16,437 INFO L225 Difference]: With dead ends: 3197 [2021-12-06 17:44:16,438 INFO L226 Difference]: Without dead ends: 3193 [2021-12-06 17:44:16,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:44:16,440 INFO L933 BasicCegarLoop]: 3380 mSDtfsCounter, 4911 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 3107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3107 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:16,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5251 Valid, 5237 Invalid, 4833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3107 Valid, 1725 Invalid, 1 Unknown, 0 Unchecked, 16.4s Time] [2021-12-06 17:44:16,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-12-06 17:44:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2571. [2021-12-06 17:44:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 1732 states have (on average 1.3187066974595842) internal successors, (2284), 1769 states have internal predecessors, (2284), 695 states have call successors, (695), 144 states have call predecessors, (695), 143 states have return successors, (686), 682 states have call predecessors, (686), 686 states have call successors, (686) [2021-12-06 17:44:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3665 transitions. [2021-12-06 17:44:16,558 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3665 transitions. Word has length 35 [2021-12-06 17:44:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:16,558 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3665 transitions. [2021-12-06 17:44:16,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:44:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3665 transitions. [2021-12-06 17:44:16,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 17:44:16,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:16,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:16,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:44:16,560 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:16,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash 98713607, now seen corresponding path program 1 times [2021-12-06 17:44:16,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:16,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339412342] [2021-12-06 17:44:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:16,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:44:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:16,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339412342] [2021-12-06 17:44:16,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339412342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:16,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:44:16,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:44:16,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261712714] [2021-12-06 17:44:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:16,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:44:16,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:16,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:44:16,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:44:16,727 INFO L87 Difference]: Start difference. First operand 2571 states and 3665 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:44:21,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:32,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:42,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:42,875 INFO L93 Difference]: Finished difference Result 8911 states and 13013 transitions. [2021-12-06 17:44:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:44:42,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-12-06 17:44:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:42,919 INFO L225 Difference]: With dead ends: 8911 [2021-12-06 17:44:42,919 INFO L226 Difference]: Without dead ends: 6348 [2021-12-06 17:44:42,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:44:42,930 INFO L933 BasicCegarLoop]: 3837 mSDtfsCounter, 6905 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 5275 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7568 SdHoareTripleChecker+Valid, 8625 SdHoareTripleChecker+Invalid, 8779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5275 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:42,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7568 Valid, 8625 Invalid, 8779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5275 Valid, 3503 Invalid, 1 Unknown, 0 Unchecked, 25.6s Time] [2021-12-06 17:44:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2021-12-06 17:44:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 5101. [2021-12-06 17:44:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 3436 states have (on average 1.3186845168800931) internal successors, (4531), 3502 states have internal predecessors, (4531), 1378 states have call successors, (1378), 287 states have call predecessors, (1378), 286 states have return successors, (1369), 1361 states have call predecessors, (1369), 1369 states have call successors, (1369) [2021-12-06 17:44:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 7278 transitions. [2021-12-06 17:44:43,175 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 7278 transitions. Word has length 36 [2021-12-06 17:44:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 5101 states and 7278 transitions. [2021-12-06 17:44:43,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:44:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 7278 transitions. [2021-12-06 17:44:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 17:44:43,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:43,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:43,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:44:43,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1619670549, now seen corresponding path program 1 times [2021-12-06 17:44:43,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:43,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620249516] [2021-12-06 17:44:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:43,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:44:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:44:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:44:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:43,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:43,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620249516] [2021-12-06 17:44:43,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620249516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:43,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:44:43,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:44:43,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705814955] [2021-12-06 17:44:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:43,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:44:43,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:44:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:44:43,387 INFO L87 Difference]: Start difference. First operand 5101 states and 7278 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:44:46,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:44:59,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:00,363 INFO L93 Difference]: Finished difference Result 6646 states and 9627 transitions. [2021-12-06 17:45:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:45:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2021-12-06 17:45:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:00,400 INFO L225 Difference]: With dead ends: 6646 [2021-12-06 17:45:00,400 INFO L226 Difference]: Without dead ends: 6642 [2021-12-06 17:45:00,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:45:00,404 INFO L933 BasicCegarLoop]: 3355 mSDtfsCounter, 4977 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 3003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 5249 SdHoareTripleChecker+Invalid, 4862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3003 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:00,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 5249 Invalid, 4862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3003 Valid, 1858 Invalid, 1 Unknown, 0 Unchecked, 16.6s Time] [2021-12-06 17:45:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2021-12-06 17:45:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 5361. [2021-12-06 17:45:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 3618 states have (on average 1.3073521282476506) internal successors, (4730), 3682 states have internal predecessors, (4730), 1396 states have call successors, (1396), 347 states have call predecessors, (1396), 346 states have return successors, (1389), 1381 states have call predecessors, (1389), 1389 states have call successors, (1389) [2021-12-06 17:45:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 7515 transitions. [2021-12-06 17:45:00,626 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 7515 transitions. Word has length 38 [2021-12-06 17:45:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:00,626 INFO L470 AbstractCegarLoop]: Abstraction has 5361 states and 7515 transitions. [2021-12-06 17:45:00,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:45:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 7515 transitions. [2021-12-06 17:45:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:45:00,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:00,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:00,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:45:00,629 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1163074537, now seen corresponding path program 1 times [2021-12-06 17:45:00,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312407070] [2021-12-06 17:45:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:00,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:45:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:45:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:00,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:00,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312407070] [2021-12-06 17:45:00,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312407070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:00,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:00,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:45:00,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488427211] [2021-12-06 17:45:00,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:00,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:45:00,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:45:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:45:00,829 INFO L87 Difference]: Start difference. First operand 5361 states and 7515 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:45:04,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:08,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:10,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:14,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:17,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:29,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:32,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:34,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:41,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:48,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:52,117 INFO L93 Difference]: Finished difference Result 16693 states and 23824 transitions. [2021-12-06 17:45:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:45:52,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2021-12-06 17:45:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:52,177 INFO L225 Difference]: With dead ends: 16693 [2021-12-06 17:45:52,177 INFO L226 Difference]: Without dead ends: 11340 [2021-12-06 17:45:52,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:45:52,195 INFO L933 BasicCegarLoop]: 4581 mSDtfsCounter, 3783 mSDsluCounter, 6774 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 2270 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 11355 SdHoareTripleChecker+Invalid, 6767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2270 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:52,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4307 Valid, 11355 Invalid, 6767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2270 Valid, 4492 Invalid, 5 Unknown, 0 Unchecked, 50.6s Time] [2021-12-06 17:45:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11340 states. [2021-12-06 17:45:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11340 to 9157. [2021-12-06 17:45:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9157 states, 6181 states have (on average 1.3067464811519172) internal successors, (8077), 6287 states have internal predecessors, (8077), 2359 states have call successors, (2359), 617 states have call predecessors, (2359), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2021-12-06 17:45:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9157 states to 9157 states and 12788 transitions. [2021-12-06 17:45:52,585 INFO L78 Accepts]: Start accepts. Automaton has 9157 states and 12788 transitions. Word has length 41 [2021-12-06 17:45:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:52,586 INFO L470 AbstractCegarLoop]: Abstraction has 9157 states and 12788 transitions. [2021-12-06 17:45:52,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:45:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 9157 states and 12788 transitions. [2021-12-06 17:45:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 17:45:52,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:52,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:52,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:45:52,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 993998376, now seen corresponding path program 1 times [2021-12-06 17:45:52,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635376409] [2021-12-06 17:45:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:52,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:45:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:45:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:45:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:45:52,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:52,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635376409] [2021-12-06 17:45:52,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635376409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:45:52,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:45:52,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:45:52,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163236053] [2021-12-06 17:45:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:45:52,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:45:52,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:45:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:45:52,755 INFO L87 Difference]: Start difference. First operand 9157 states and 12788 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:45:55,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:45:57,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:15,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:18,531 INFO L93 Difference]: Finished difference Result 11325 states and 16299 transitions. [2021-12-06 17:46:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:18,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-06 17:46:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:18,569 INFO L225 Difference]: With dead ends: 11325 [2021-12-06 17:46:18,569 INFO L226 Difference]: Without dead ends: 11322 [2021-12-06 17:46:18,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:46:18,575 INFO L933 BasicCegarLoop]: 3314 mSDtfsCounter, 4371 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 2189 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 6160 SdHoareTripleChecker+Invalid, 4526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2189 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:18,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4720 Valid, 6160 Invalid, 4526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2189 Valid, 2335 Invalid, 2 Unknown, 0 Unchecked, 25.3s Time] [2021-12-06 17:46:18,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11322 states. [2021-12-06 17:46:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11322 to 9156. [2021-12-06 17:46:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 6181 states have (on average 1.306584695033166) internal successors, (8076), 6286 states have internal predecessors, (8076), 2358 states have call successors, (2358), 617 states have call predecessors, (2358), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2021-12-06 17:46:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 12786 transitions. [2021-12-06 17:46:18,946 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 12786 transitions. Word has length 40 [2021-12-06 17:46:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:18,946 INFO L470 AbstractCegarLoop]: Abstraction has 9156 states and 12786 transitions. [2021-12-06 17:46:18,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:46:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 12786 transitions. [2021-12-06 17:46:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:46:18,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:18,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:18,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:46:18,947 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 747995506, now seen corresponding path program 1 times [2021-12-06 17:46:18,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:18,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101999422] [2021-12-06 17:46:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:18,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:46:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:19,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:19,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101999422] [2021-12-06 17:46:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101999422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:19,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:46:19,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079356144] [2021-12-06 17:46:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:19,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:46:19,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:46:19,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:46:19,117 INFO L87 Difference]: Start difference. First operand 9156 states and 12786 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:46:22,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:33,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:40,232 INFO L93 Difference]: Finished difference Result 13418 states and 18926 transitions. [2021-12-06 17:46:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:46:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-12-06 17:46:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:40,277 INFO L225 Difference]: With dead ends: 13418 [2021-12-06 17:46:40,277 INFO L226 Difference]: Without dead ends: 13414 [2021-12-06 17:46:40,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:46:40,282 INFO L933 BasicCegarLoop]: 3508 mSDtfsCounter, 3168 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 2530 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3538 SdHoareTripleChecker+Valid, 7714 SdHoareTripleChecker+Invalid, 5010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2530 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:40,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3538 Valid, 7714 Invalid, 5010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2530 Valid, 2479 Invalid, 1 Unknown, 0 Unchecked, 20.5s Time] [2021-12-06 17:46:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13414 states. [2021-12-06 17:46:40,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13414 to 10988. [2021-12-06 17:46:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10988 states, 7397 states have (on average 1.2922806543193186) internal successors, (9559), 7532 states have internal predecessors, (9559), 2760 states have call successors, (2760), 831 states have call predecessors, (2760), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2021-12-06 17:46:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10988 states to 10988 states and 15075 transitions. [2021-12-06 17:46:40,727 INFO L78 Accepts]: Start accepts. Automaton has 10988 states and 15075 transitions. Word has length 41 [2021-12-06 17:46:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:40,727 INFO L470 AbstractCegarLoop]: Abstraction has 10988 states and 15075 transitions. [2021-12-06 17:46:40,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:46:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10988 states and 15075 transitions. [2021-12-06 17:46:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 17:46:40,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:40,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:40,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:46:40,729 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 73984686, now seen corresponding path program 1 times [2021-12-06 17:46:40,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:40,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831153481] [2021-12-06 17:46:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:40,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:46:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:40,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:40,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831153481] [2021-12-06 17:46:40,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831153481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:40,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:40,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:46:40,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241399169] [2021-12-06 17:46:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:40,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:46:40,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:46:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:46:40,881 INFO L87 Difference]: Start difference. First operand 10988 states and 15075 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:46:43,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:47,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:46:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:46:59,103 INFO L93 Difference]: Finished difference Result 13412 states and 18916 transitions. [2021-12-06 17:46:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:46:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2021-12-06 17:46:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:46:59,144 INFO L225 Difference]: With dead ends: 13412 [2021-12-06 17:46:59,144 INFO L226 Difference]: Without dead ends: 13400 [2021-12-06 17:46:59,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:46:59,149 INFO L933 BasicCegarLoop]: 3335 mSDtfsCounter, 5050 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 3201 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 4785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3201 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:46:59,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5398 Valid, 5024 Invalid, 4785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3201 Valid, 1583 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2021-12-06 17:46:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13400 states. [2021-12-06 17:46:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13400 to 10978. [2021-12-06 17:46:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 7388 states have (on average 1.2918245804006496) internal successors, (9544), 7522 states have internal predecessors, (9544), 2759 states have call successors, (2759), 831 states have call predecessors, (2759), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2021-12-06 17:46:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 15059 transitions. [2021-12-06 17:46:59,558 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 15059 transitions. Word has length 44 [2021-12-06 17:46:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:46:59,559 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 15059 transitions. [2021-12-06 17:46:59,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:46:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 15059 transitions. [2021-12-06 17:46:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 17:46:59,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:46:59,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:46:59,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:46:59,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:46:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:46:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1848927386, now seen corresponding path program 1 times [2021-12-06 17:46:59,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:46:59,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039502401] [2021-12-06 17:46:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:46:59,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:46:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:46:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:46:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:46:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:46:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 17:46:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:46:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:46:59,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:46:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039502401] [2021-12-06 17:46:59,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039502401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:46:59,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:46:59,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:46:59,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63533797] [2021-12-06 17:46:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:46:59,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:46:59,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:46:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:46:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:46:59,785 INFO L87 Difference]: Start difference. First operand 10978 states and 15059 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:47:04,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:06,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:10,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:12,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:19,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:21,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:33,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:35,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:47:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:47:55,235 INFO L93 Difference]: Finished difference Result 13435 states and 18954 transitions. [2021-12-06 17:47:55,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:47:55,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-12-06 17:47:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:47:55,277 INFO L225 Difference]: With dead ends: 13435 [2021-12-06 17:47:55,277 INFO L226 Difference]: Without dead ends: 13432 [2021-12-06 17:47:55,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:47:55,283 INFO L933 BasicCegarLoop]: 3011 mSDtfsCounter, 3431 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 7796 mSolverCounterSat, 2760 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 10562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2760 IncrementalHoareTripleChecker+Valid, 7796 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:47:55,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3848 Valid, 5122 Invalid, 10562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2760 Valid, 7796 Invalid, 6 Unknown, 0 Unchecked, 54.5s Time] [2021-12-06 17:47:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2021-12-06 17:47:55,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 10977. [2021-12-06 17:47:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10977 states, 7388 states have (on average 1.2907417433676232) internal successors, (9536), 7521 states have internal predecessors, (9536), 2758 states have call successors, (2758), 831 states have call predecessors, (2758), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2021-12-06 17:47:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10977 states to 10977 states and 15050 transitions. [2021-12-06 17:47:55,722 INFO L78 Accepts]: Start accepts. Automaton has 10977 states and 15050 transitions. Word has length 52 [2021-12-06 17:47:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:47:55,722 INFO L470 AbstractCegarLoop]: Abstraction has 10977 states and 15050 transitions. [2021-12-06 17:47:55,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:47:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10977 states and 15050 transitions. [2021-12-06 17:47:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 17:47:55,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:47:55,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:47:55,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:47:55,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:47:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:47:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1462173231, now seen corresponding path program 1 times [2021-12-06 17:47:55,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:47:55,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421279195] [2021-12-06 17:47:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:47:55,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:47:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:47:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:47:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:47:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 17:47:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:47:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:47:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:47:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:47:56,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:47:56,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421279195] [2021-12-06 17:47:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421279195] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:47:56,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:47:56,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:47:56,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832640637] [2021-12-06 17:47:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:47:56,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:47:56,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:47:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:47:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:47:56,018 INFO L87 Difference]: Start difference. First operand 10977 states and 15050 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:48:01,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:03,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:05,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:07,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:09,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:12,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:18,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:20,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:22,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:35,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:36,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:39,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:48,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:49,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:50,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:48:54,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:04,917 INFO L93 Difference]: Finished difference Result 16157 states and 23775 transitions. [2021-12-06 17:49:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:49:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2021-12-06 17:49:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:04,985 INFO L225 Difference]: With dead ends: 16157 [2021-12-06 17:49:04,986 INFO L226 Difference]: Without dead ends: 16154 [2021-12-06 17:49:04,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:49:04,992 INFO L933 BasicCegarLoop]: 3424 mSDtfsCounter, 4081 mSDsluCounter, 7882 mSDsCounter, 0 mSdLazyCounter, 7907 mSolverCounterSat, 4293 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 11306 SdHoareTripleChecker+Invalid, 12206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4293 IncrementalHoareTripleChecker+Valid, 7907 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:04,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4346 Valid, 11306 Invalid, 12206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4293 Valid, 7907 Invalid, 6 Unknown, 0 Unchecked, 67.5s Time] [2021-12-06 17:49:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16154 states. [2021-12-06 17:49:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16154 to 10976. [2021-12-06 17:49:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10976 states, 7388 states have (on average 1.2891174878180833) internal successors, (9524), 7520 states have internal predecessors, (9524), 2757 states have call successors, (2757), 831 states have call predecessors, (2757), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2021-12-06 17:49:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 15037 transitions. [2021-12-06 17:49:05,504 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 15037 transitions. Word has length 58 [2021-12-06 17:49:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:05,504 INFO L470 AbstractCegarLoop]: Abstraction has 10976 states and 15037 transitions. [2021-12-06 17:49:05,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 7 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:49:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 15037 transitions. [2021-12-06 17:49:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 17:49:05,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:05,509 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:05,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:49:05,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash -879177529, now seen corresponding path program 1 times [2021-12-06 17:49:05,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:05,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831029832] [2021-12-06 17:49:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:05,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:49:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:49:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:49:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:49:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:49:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:49:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:49:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:49:05,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831029832] [2021-12-06 17:49:05,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831029832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:05,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:05,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:05,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462176861] [2021-12-06 17:49:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:05,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:05,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:05,765 INFO L87 Difference]: Start difference. First operand 10976 states and 15037 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:49:12,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:15,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:19,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:21,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:23,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:27,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:38,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:49:41,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:01,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:03,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:04,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:05,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:16,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:24,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:37,682 INFO L93 Difference]: Finished difference Result 26356 states and 36870 transitions. [2021-12-06 17:50:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:50:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2021-12-06 17:50:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:37,750 INFO L225 Difference]: With dead ends: 26356 [2021-12-06 17:50:37,750 INFO L226 Difference]: Without dead ends: 15388 [2021-12-06 17:50:37,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:50:37,783 INFO L933 BasicCegarLoop]: 3534 mSDtfsCounter, 9622 mSDsluCounter, 5064 mSDsCounter, 0 mSdLazyCounter, 13901 mSolverCounterSat, 7387 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10193 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 21296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7387 IncrementalHoareTripleChecker+Valid, 13901 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:37,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10193 Valid, 8598 Invalid, 21296 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7387 Valid, 13901 Invalid, 8 Unknown, 0 Unchecked, 90.1s Time] [2021-12-06 17:50:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15388 states. [2021-12-06 17:50:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15388 to 11946. [2021-12-06 17:50:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11946 states, 8016 states have (on average 1.285179640718563) internal successors, (10302), 8162 states have internal predecessors, (10302), 3015 states have call successors, (3015), 915 states have call predecessors, (3015), 914 states have return successors, (3014), 2998 states have call predecessors, (3014), 3014 states have call successors, (3014) [2021-12-06 17:50:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11946 states to 11946 states and 16331 transitions. [2021-12-06 17:50:38,352 INFO L78 Accepts]: Start accepts. Automaton has 11946 states and 16331 transitions. Word has length 90 [2021-12-06 17:50:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:50:38,352 INFO L470 AbstractCegarLoop]: Abstraction has 11946 states and 16331 transitions. [2021-12-06 17:50:38,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:50:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 11946 states and 16331 transitions. [2021-12-06 17:50:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 17:50:38,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:50:38,356 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:50:38,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:50:38,357 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:50:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:50:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1439877307, now seen corresponding path program 1 times [2021-12-06 17:50:38,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:50:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648905692] [2021-12-06 17:50:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:50:38,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:50:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:50:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:50:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:50:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:50:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 17:50:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 17:50:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:50:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:50:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:50:38,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:50:38,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648905692] [2021-12-06 17:50:38,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648905692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:50:38,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:50:38,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:50:38,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610222161] [2021-12-06 17:50:38,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:50:38,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:50:38,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:50:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:50:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:50:38,597 INFO L87 Difference]: Start difference. First operand 11946 states and 16331 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:50:43,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:45,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:47,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:51,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:50:53,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:01,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:04,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:18,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:28,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:38,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:51:43,403 INFO L93 Difference]: Finished difference Result 22102 states and 30552 transitions. [2021-12-06 17:51:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:51:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2021-12-06 17:51:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:51:43,440 INFO L225 Difference]: With dead ends: 22102 [2021-12-06 17:51:43,440 INFO L226 Difference]: Without dead ends: 10162 [2021-12-06 17:51:43,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:51:43,471 INFO L933 BasicCegarLoop]: 2916 mSDtfsCounter, 3288 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 7577 mSolverCounterSat, 2655 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3704 SdHoareTripleChecker+Valid, 5265 SdHoareTripleChecker+Invalid, 10241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2655 IncrementalHoareTripleChecker+Valid, 7577 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:51:43,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3704 Valid, 5265 Invalid, 10241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2655 Valid, 7577 Invalid, 9 Unknown, 0 Unchecked, 63.8s Time] [2021-12-06 17:51:43,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states. [2021-12-06 17:51:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 8345. [2021-12-06 17:51:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8345 states, 5605 states have (on average 1.2843889384478144) internal successors, (7199), 5707 states have internal predecessors, (7199), 2092 states have call successors, (2092), 648 states have call predecessors, (2092), 647 states have return successors, (2091), 2079 states have call predecessors, (2091), 2091 states have call successors, (2091) [2021-12-06 17:51:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8345 states to 8345 states and 11382 transitions. [2021-12-06 17:51:43,858 INFO L78 Accepts]: Start accepts. Automaton has 8345 states and 11382 transitions. Word has length 90 [2021-12-06 17:51:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:43,858 INFO L470 AbstractCegarLoop]: Abstraction has 8345 states and 11382 transitions. [2021-12-06 17:51:43,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:51:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 8345 states and 11382 transitions. [2021-12-06 17:51:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 17:51:43,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:43,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:51:43,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:51:43,863 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash 804025339, now seen corresponding path program 1 times [2021-12-06 17:51:43,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:43,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054283447] [2021-12-06 17:51:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:43,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:51:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:51:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:51:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:51:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 17:51:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:51:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:51:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 17:51:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:51:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 17:51:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 17:51:44,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:44,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054283447] [2021-12-06 17:51:44,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054283447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:51:44,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:51:44,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:51:44,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129754057] [2021-12-06 17:51:44,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:51:44,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:51:44,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:51:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:51:44,239 INFO L87 Difference]: Start difference. First operand 8345 states and 11382 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:51:51,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:53,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:55,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:51:59,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:01,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:03,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:10,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:12,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:14,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:16,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:20,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:22,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:25,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:29,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:35,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:38,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:52:44,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:00,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:03,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:05,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:06,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:10,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:21,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:23,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:32,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:53:43,178 INFO L93 Difference]: Finished difference Result 18842 states and 26191 transitions. [2021-12-06 17:53:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:53:43,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2021-12-06 17:53:43,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:53:43,249 INFO L225 Difference]: With dead ends: 18842 [2021-12-06 17:53:43,249 INFO L226 Difference]: Without dead ends: 13325 [2021-12-06 17:53:43,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:53:43,262 INFO L933 BasicCegarLoop]: 3591 mSDtfsCounter, 8072 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 13269 mSolverCounterSat, 6609 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8435 SdHoareTripleChecker+Valid, 6700 SdHoareTripleChecker+Invalid, 19894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6609 IncrementalHoareTripleChecker+Valid, 13269 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:53:43,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8435 Valid, 6700 Invalid, 19894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6609 Valid, 13269 Invalid, 16 Unknown, 0 Unchecked, 117.2s Time] [2021-12-06 17:53:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13325 states. [2021-12-06 17:53:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13325 to 10910. [2021-12-06 17:53:43,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10910 states, 7328 states have (on average 1.2839792576419213) internal successors, (9409), 7463 states have internal predecessors, (9409), 2728 states have call successors, (2728), 854 states have call predecessors, (2728), 853 states have return successors, (2727), 2711 states have call predecessors, (2727), 2727 states have call successors, (2727) [2021-12-06 17:53:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 14864 transitions. [2021-12-06 17:53:43,744 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 14864 transitions. Word has length 107 [2021-12-06 17:53:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:53:43,744 INFO L470 AbstractCegarLoop]: Abstraction has 10910 states and 14864 transitions. [2021-12-06 17:53:43,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:53:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 14864 transitions. [2021-12-06 17:53:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 17:53:43,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:53:43,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:53:43,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:53:43,750 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:53:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash -799038922, now seen corresponding path program 1 times [2021-12-06 17:53:43,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:43,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847411160] [2021-12-06 17:53:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:43,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:53:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:53:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 17:53:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:53:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 17:53:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:53:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:53:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 17:53:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:53:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 17:53:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 17:53:44,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:44,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847411160] [2021-12-06 17:53:44,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847411160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:53:44,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:53:44,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:53:44,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954721340] [2021-12-06 17:53:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:53:44,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:53:44,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:53:44,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:53:44,005 INFO L87 Difference]: Start difference. First operand 10910 states and 14864 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:53:48,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:51,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:53,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:53:56,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:54:10,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:54:16,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:54:19,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 17:54:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:54:24,157 INFO L93 Difference]: Finished difference Result 13317 states and 18632 transitions. [2021-12-06 17:54:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:54:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2021-12-06 17:54:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:54:24,160 INFO L225 Difference]: With dead ends: 13317 [2021-12-06 17:54:24,160 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:54:24,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:54:24,187 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 6400 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 6032 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6519 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 10544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6032 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:54:24,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6519 Valid, 4374 Invalid, 10544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6032 Valid, 4507 Invalid, 5 Unknown, 0 Unchecked, 38.9s Time] [2021-12-06 17:54:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:54:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:54:24,188 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) [2021-12-06 17:54:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:54:24,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-12-06 17:54:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:54:24,191 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:54:24,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:54:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:54:24,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:54:24,193 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:54:24,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:54:24,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:54:44,397 WARN L227 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 17:54:52,743 WARN L227 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 17:55:21,245 WARN L227 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)