./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/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_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:45:23,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:45:23,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:45:24,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:45:24,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:45:24,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:45:24,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:45:24,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:45:24,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:45:24,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:45:24,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:45:24,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:45:24,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:45:24,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:45:24,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:45:24,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:45:24,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:45:24,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:45:24,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:45:24,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:45:24,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:45:24,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:45:24,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:45:24,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:45:24,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:45:24,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:45:24,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:45:24,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:45:24,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:45:24,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:45:24,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:45:24,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:45:24,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:45:24,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:45:24,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:45:24,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:45:24,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:45:24,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:45:24,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:45:24,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:45:24,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:45:24,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:45:24,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:45:24,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:45:24,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:45:24,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:45:24,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:45:24,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:45:24,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:45:24,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:45:24,162 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:45:24,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:45:24,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:45:24,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:45:24,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:45:24,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:45:24,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:45:24,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:45:24,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:45:24,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:45:24,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:45:24,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:45:24,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:45:24,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:45:24,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:45:24,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:45:24,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:45:24,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:45:24,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:45:24,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:45:24,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:45:24,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:45:24,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:45:24,169 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_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2021-11-13 18:45:24,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:45:24,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:45:24,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:45:24,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:45:24,516 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:45:24,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/../../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 [2021-11-13 18:45:24,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/data/07978afc0/a1b54856ba554525a934ea46fe5e1507/FLAG5a07e3274 [2021-11-13 18:45:25,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:45:25,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/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 [2021-11-13 18:45:25,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/data/07978afc0/a1b54856ba554525a934ea46fe5e1507/FLAG5a07e3274 [2021-11-13 18:45:25,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/data/07978afc0/a1b54856ba554525a934ea46fe5e1507 [2021-11-13 18:45:25,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:45:25,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:45:25,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:45:25,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:45:25,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:45:25,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:45:25" (1/1) ... [2021-11-13 18:45:25,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fb63ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:25, skipping insertion in model container [2021-11-13 18:45:25,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:45:25" (1/1) ... [2021-11-13 18:45:25,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:45:26,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:45:29,165 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/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] [2021-11-13 18:45:29,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:29,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:45:30,129 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/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] [2021-11-13 18:45:30,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:45:30,331 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:45:30,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30 WrapperNode [2021-11-13 18:45:30,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:45:30,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:45:30,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:45:30,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:45:30,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:30,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:30,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:45:30,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:45:30,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:45:30,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:45:30,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:30,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:30,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:30,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:31,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:31,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:31,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:31,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:45:31,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:45:31,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:45:31,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:45:31,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (1/1) ... [2021-11-13 18:45:31,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:45:31,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:45:31,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:45:31,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_845a6b45-dc86-4406-945a-75015b273cb8/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:45:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2021-11-13 18:45:31,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2021-11-13 18:45:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2021-11-13 18:45:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2021-11-13 18:45:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2021-11-13 18:45:31,495 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2021-11-13 18:45:31,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:45:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:45:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:45:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:45:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2021-11-13 18:45:31,496 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2021-11-13 18:45:31,496 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2021-11-13 18:45:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2021-11-13 18:45:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-11-13 18:45:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-11-13 18:45:31,497 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2021-11-13 18:45:31,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2021-11-13 18:45:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2021-11-13 18:45:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2021-11-13 18:45:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2021-11-13 18:45:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2021-11-13 18:45:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2021-11-13 18:45:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2021-11-13 18:45:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2021-11-13 18:45:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2021-11-13 18:45:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2021-11-13 18:45:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2021-11-13 18:45:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 18:45:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 18:45:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2021-11-13 18:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2021-11-13 18:45:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 18:45:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 18:45:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 18:45:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 18:45:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2021-11-13 18:45:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2021-11-13 18:45:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2021-11-13 18:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2021-11-13 18:45:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:45:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2021-11-13 18:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2021-11-13 18:45:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2021-11-13 18:45:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2021-11-13 18:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 18:45:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 18:45:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2021-11-13 18:45:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2021-11-13 18:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2021-11-13 18:45:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2021-11-13 18:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:45:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2021-11-13 18:45:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2021-11-13 18:45:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-13 18:45:31,505 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-13 18:45:31,506 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2021-11-13 18:45:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2021-11-13 18:45:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2021-11-13 18:45:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2021-11-13 18:45:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:45:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2021-11-13 18:45:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2021-11-13 18:45:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:45:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:45:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2021-11-13 18:45:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2021-11-13 18:45:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-13 18:45:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-13 18:45:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-13 18:45:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-13 18:45:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2021-11-13 18:45:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2021-11-13 18:45:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2021-11-13 18:45:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2021-11-13 18:45:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2021-11-13 18:45:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2021-11-13 18:45:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2021-11-13 18:45:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2021-11-13 18:45:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 18:45:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 18:45:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2021-11-13 18:45:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2021-11-13 18:45:31,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:45:31,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:45:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2021-11-13 18:45:31,513 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2021-11-13 18:45:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:45:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2021-11-13 18:45:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2021-11-13 18:45:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-13 18:45:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-13 18:45:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:45:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2021-11-13 18:45:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2021-11-13 18:45:31,516 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2021-11-13 18:45:31,516 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2021-11-13 18:45:31,517 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2021-11-13 18:45:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2021-11-13 18:45:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:45:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:45:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:45:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:45:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-13 18:45:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-13 18:45:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2021-11-13 18:45:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2021-11-13 18:45:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2021-11-13 18:45:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2021-11-13 18:45:31,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:45:31,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:45:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-13 18:45:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-13 18:45:31,521 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2021-11-13 18:45:31,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2021-11-13 18:45:31,522 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2021-11-13 18:45:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2021-11-13 18:45:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 18:45:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 18:45:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2021-11-13 18:45:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2021-11-13 18:45:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2021-11-13 18:45:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2021-11-13 18:45:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:45:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:45:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:45:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:45:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2021-11-13 18:45:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2021-11-13 18:45:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2021-11-13 18:45:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2021-11-13 18:45:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2021-11-13 18:45:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2021-11-13 18:45:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2021-11-13 18:45:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2021-11-13 18:45:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-11-13 18:45:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-11-13 18:45:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2021-11-13 18:45:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2021-11-13 18:45:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2021-11-13 18:45:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2021-11-13 18:45:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-13 18:45:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-13 18:45:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2021-11-13 18:45:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2021-11-13 18:45:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:45:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:45:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:45:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:45:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2021-11-13 18:45:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2021-11-13 18:45:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2021-11-13 18:45:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2021-11-13 18:45:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-13 18:45:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-13 18:45:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:45:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:45:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2021-11-13 18:45:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2021-11-13 18:45:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2021-11-13 18:45:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2021-11-13 18:45:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2021-11-13 18:45:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2021-11-13 18:45:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:45:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:45:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2021-11-13 18:45:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2021-11-13 18:45:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2021-11-13 18:45:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2021-11-13 18:45:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2021-11-13 18:45:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2021-11-13 18:45:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-13 18:45:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-13 18:45:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2021-11-13 18:45:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2021-11-13 18:45:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:45:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:45:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:45:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2021-11-13 18:45:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2021-11-13 18:45:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2021-11-13 18:45:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2021-11-13 18:45:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2021-11-13 18:45:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2021-11-13 18:45:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:45:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-13 18:45:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-13 18:45:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-13 18:45:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-13 18:45:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:45:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2021-11-13 18:45:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2021-11-13 18:45:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2021-11-13 18:45:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2021-11-13 18:45:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2021-11-13 18:45:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2021-11-13 18:45:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-13 18:45:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-13 18:45:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:45:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:45:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-13 18:45:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-13 18:45:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2021-11-13 18:45:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2021-11-13 18:45:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:45:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:45:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2021-11-13 18:45:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2021-11-13 18:45:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-13 18:45:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-13 18:45:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2021-11-13 18:45:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2021-11-13 18:45:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2021-11-13 18:45:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2021-11-13 18:45:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2021-11-13 18:45:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2021-11-13 18:45:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2021-11-13 18:45:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2021-11-13 18:45:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-13 18:45:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-13 18:45:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2021-11-13 18:45:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2021-11-13 18:45:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2021-11-13 18:45:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2021-11-13 18:45:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2021-11-13 18:45:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2021-11-13 18:45:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2021-11-13 18:45:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2021-11-13 18:45:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:45:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:45:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2021-11-13 18:45:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2021-11-13 18:45:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:45:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:45:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:45:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2021-11-13 18:45:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2021-11-13 18:45:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2021-11-13 18:45:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2021-11-13 18:45:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2021-11-13 18:45:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2021-11-13 18:45:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2021-11-13 18:45:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2021-11-13 18:45:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2021-11-13 18:45:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2021-11-13 18:45:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2021-11-13 18:45:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2021-11-13 18:45:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2021-11-13 18:45:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2021-11-13 18:45:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2021-11-13 18:45:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2021-11-13 18:45:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2021-11-13 18:45:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2021-11-13 18:45:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2021-11-13 18:45:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2021-11-13 18:45:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2021-11-13 18:45:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2021-11-13 18:45:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2021-11-13 18:45:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2021-11-13 18:45:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-13 18:45:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-13 18:45:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2021-11-13 18:45:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2021-11-13 18:45:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-13 18:45:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-13 18:45:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2021-11-13 18:45:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2021-11-13 18:45:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2021-11-13 18:45:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2021-11-13 18:45:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2021-11-13 18:45:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2021-11-13 18:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2021-11-13 18:45:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2021-11-13 18:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2021-11-13 18:45:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2021-11-13 18:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:45:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2021-11-13 18:45:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2021-11-13 18:45:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2021-11-13 18:45:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2021-11-13 18:45:33,362 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:46:09,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:46:09,565 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:46:09,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:46:09 BoogieIcfgContainer [2021-11-13 18:46:09,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:46:09,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:46:09,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:46:09,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:46:09,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:45:25" (1/3) ... [2021-11-13 18:46:09,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ed421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:46:09, skipping insertion in model container [2021-11-13 18:46:09,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:45:30" (2/3) ... [2021-11-13 18:46:09,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ed421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:46:09, skipping insertion in model container [2021-11-13 18:46:09,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:46:09" (3/3) ... [2021-11-13 18:46:09,582 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2021-11-13 18:46:09,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:46:09,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:46:09,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:46:09,670 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:46:09,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:46:09,777 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) [2021-11-13 18:46:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:46:09,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:09,786 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] [2021-11-13 18:46:09,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1765604170, now seen corresponding path program 1 times [2021-11-13 18:46:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:09,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852870774] [2021-11-13 18:46:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:09,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:11,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:11,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852870774] [2021-11-13 18:46:11,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852870774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:11,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:11,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:46:11,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906560907] [2021-11-13 18:46:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:11,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:11,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:11,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:46:11,123 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) [2021-11-13 18:46:13,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:15,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:19,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:21,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:33,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:35,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:41,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:42,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:44,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:50,633 INFO L93 Difference]: Finished difference Result 5694 states and 8677 transitions. [2021-11-13 18:46:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:46:50,636 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 [2021-11-13 18:46:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:50,710 INFO L225 Difference]: With dead ends: 5694 [2021-11-13 18:46:50,711 INFO L226 Difference]: Without dead ends: 3144 [2021-11-13 18:46:50,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:46:50,762 INFO L933 BasicCegarLoop]: 3391 mSDtfsCounter, 1110 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 987 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36933.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 6275 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.14ms SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38883.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:50,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 6275 Invalid, 3299 Unknown, 0 Unchecked, 94.14ms Time], IncrementalHoareTripleChecker [987 Valid, 2306 Invalid, 6 Unknown, 0 Unchecked, 38883.98ms Time] [2021-11-13 18:46:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2021-11-13 18:46:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2529. [2021-11-13 18:46:51,126 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) [2021-11-13 18:46:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3633 transitions. [2021-11-13 18:46:51,163 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3633 transitions. Word has length 35 [2021-11-13 18:46:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:51,164 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 3633 transitions. [2021-11-13 18:46:51,165 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) [2021-11-13 18:46:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3633 transitions. [2021-11-13 18:46:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:46:51,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:51,173 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] [2021-11-13 18:46:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:46:51,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:51,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1899617676, now seen corresponding path program 1 times [2021-11-13 18:46:51,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:51,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786454353] [2021-11-13 18:46:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:51,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:51,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:51,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786454353] [2021-11-13 18:46:51,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786454353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:51,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:51,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:46:51,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294366317] [2021-11-13 18:46:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:51,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:46:51,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:51,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:46:51,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:46:51,755 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) [2021-11-13 18:46:53,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:46:58,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:00,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:05,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:09,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:14,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:17,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:18,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:21,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:21,910 INFO L93 Difference]: Finished difference Result 3197 states and 4706 transitions. [2021-11-13 18:47:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:47:21,911 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 [2021-11-13 18:47:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:21,949 INFO L225 Difference]: With dead ends: 3197 [2021-11-13 18:47:21,949 INFO L226 Difference]: Without dead ends: 3193 [2021-11-13 18:47:21,952 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 [2021-11-13 18:47:21,954 INFO L933 BasicCegarLoop]: 3375 mSDtfsCounter, 4913 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 3114 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28092.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5253 SdHoareTripleChecker+Valid, 5232 SdHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.74ms SdHoareTripleChecker+Time, 3114 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29690.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:21,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5253 Valid, 5232 Invalid, 4843 Unknown, 0 Unchecked, 70.74ms Time], IncrementalHoareTripleChecker [3114 Valid, 1724 Invalid, 5 Unknown, 0 Unchecked, 29690.36ms Time] [2021-11-13 18:47:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-11-13 18:47:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 2571. [2021-11-13 18:47:22,169 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) [2021-11-13 18:47:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3665 transitions. [2021-11-13 18:47:22,195 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3665 transitions. Word has length 35 [2021-11-13 18:47:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3665 transitions. [2021-11-13 18:47:22,197 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) [2021-11-13 18:47:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3665 transitions. [2021-11-13 18:47:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 18:47:22,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:22,200 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] [2021-11-13 18:47:22,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:47:22,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 98713607, now seen corresponding path program 1 times [2021-11-13 18:47:22,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:22,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944554909] [2021-11-13 18:47:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:22,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:47:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:22,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:47:22,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:47:22,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944554909] [2021-11-13 18:47:22,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944554909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:22,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:22,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:47:22,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274288948] [2021-11-13 18:47:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:22,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:47:22,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:47:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:47:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:22,643 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) [2021-11-13 18:47:24,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:26,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:32,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:34,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:41,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:44,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:49,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:55,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:58,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:00,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:04,731 INFO L93 Difference]: Finished difference Result 8683 states and 12660 transitions. [2021-11-13 18:48:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:04,732 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 [2021-11-13 18:48:04,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:04,798 INFO L225 Difference]: With dead ends: 8683 [2021-11-13 18:48:04,798 INFO L226 Difference]: Without dead ends: 6120 [2021-11-13 18:48:04,815 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 [2021-11-13 18:48:04,816 INFO L933 BasicCegarLoop]: 4041 mSDtfsCounter, 6450 mSDsluCounter, 4939 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 4899 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38947.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7089 SdHoareTripleChecker+Valid, 8980 SdHoareTripleChecker+Invalid, 8401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.53ms SdHoareTripleChecker+Time, 4899 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41440.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:04,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7089 Valid, 8980 Invalid, 8401 Unknown, 0 Unchecked, 87.53ms Time], IncrementalHoareTripleChecker [4899 Valid, 3496 Invalid, 6 Unknown, 0 Unchecked, 41440.56ms Time] [2021-11-13 18:48:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2021-11-13 18:48:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 4934. [2021-11-13 18:48:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 3325 states have (on average 1.318796992481203) internal successors, (4385), 3387 states have internal predecessors, (4385), 1328 states have call successors, (1328), 282 states have call predecessors, (1328), 280 states have return successors, (1319), 1310 states have call predecessors, (1319), 1319 states have call successors, (1319) [2021-11-13 18:48:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 7032 transitions. [2021-11-13 18:48:05,210 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 7032 transitions. Word has length 36 [2021-11-13 18:48:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:05,210 INFO L470 AbstractCegarLoop]: Abstraction has 4934 states and 7032 transitions. [2021-11-13 18:48:05,211 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) [2021-11-13 18:48:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 7032 transitions. [2021-11-13 18:48:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 18:48:05,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:05,222 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] [2021-11-13 18:48:05,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:48:05,223 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1619670549, now seen corresponding path program 1 times [2021-11-13 18:48:05,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:05,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387671677] [2021-11-13 18:48:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:05,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:48:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:48:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:48:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:05,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:05,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387671677] [2021-11-13 18:48:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387671677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:05,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:05,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:48:05,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390621223] [2021-11-13 18:48:05,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:05,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:48:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:48:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:05,715 INFO L87 Difference]: Start difference. First operand 4934 states and 7032 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) [2021-11-13 18:48:07,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:11,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:20,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:24,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:26,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:29,588 INFO L93 Difference]: Finished difference Result 6415 states and 9271 transitions. [2021-11-13 18:48:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:48:29,589 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 [2021-11-13 18:48:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:29,648 INFO L225 Difference]: With dead ends: 6415 [2021-11-13 18:48:29,648 INFO L226 Difference]: Without dead ends: 6411 [2021-11-13 18:48:29,653 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 [2021-11-13 18:48:29,654 INFO L933 BasicCegarLoop]: 3353 mSDtfsCounter, 4978 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 3002 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22105.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5381 SdHoareTripleChecker+Valid, 5249 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.40ms SdHoareTripleChecker+Time, 3002 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23468.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:29,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5381 Valid, 5249 Invalid, 4864 Unknown, 0 Unchecked, 38.40ms Time], IncrementalHoareTripleChecker [3002 Valid, 1860 Invalid, 2 Unknown, 0 Unchecked, 23468.37ms Time] [2021-11-13 18:48:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-11-13 18:48:30,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5194. [2021-11-13 18:48:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 3507 states have (on average 1.3071000855431993) internal successors, (4584), 3567 states have internal predecessors, (4584), 1346 states have call successors, (1346), 342 states have call predecessors, (1346), 340 states have return successors, (1339), 1330 states have call predecessors, (1339), 1339 states have call successors, (1339) [2021-11-13 18:48:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 7269 transitions. [2021-11-13 18:48:30,236 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 7269 transitions. Word has length 38 [2021-11-13 18:48:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:30,237 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 7269 transitions. [2021-11-13 18:48:30,238 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) [2021-11-13 18:48:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 7269 transitions. [2021-11-13 18:48:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:48:30,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:30,242 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] [2021-11-13 18:48:30,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:48:30,242 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1163074537, now seen corresponding path program 1 times [2021-11-13 18:48:30,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:30,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524141486] [2021-11-13 18:48:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:30,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:48:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:48:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:48:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 18:48:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:30,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:30,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524141486] [2021-11-13 18:48:30,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524141486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:30,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:30,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:48:30,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249067340] [2021-11-13 18:48:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:30,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:48:30,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:48:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:30,668 INFO L87 Difference]: Start difference. First operand 5194 states and 7269 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) [2021-11-13 18:48:32,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:36,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:40,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:42,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:44,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:48,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:50,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:56,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:58,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:00,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:07,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:09,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:11,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:17,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:18,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:22,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:25,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:30,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:31,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:32,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:33,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:35,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:36,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:39,908 INFO L93 Difference]: Finished difference Result 15394 states and 21882 transitions. [2021-11-13 18:49:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:49:39,909 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 [2021-11-13 18:49:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:39,995 INFO L225 Difference]: With dead ends: 15394 [2021-11-13 18:49:39,995 INFO L226 Difference]: Without dead ends: 10208 [2021-11-13 18:49:40,026 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 [2021-11-13 18:49:40,027 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 3780 mSDsluCounter, 6790 mSDsCounter, 0 mSdLazyCounter, 4510 mSolverCounterSat, 2264 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65460.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 11394 SdHoareTripleChecker+Invalid, 6782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.50ms SdHoareTripleChecker+Time, 2264 IncrementalHoareTripleChecker+Valid, 4510 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68545.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:40,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 11394 Invalid, 6782 Unknown, 0 Unchecked, 76.50ms Time], IncrementalHoareTripleChecker [2264 Valid, 4510 Invalid, 8 Unknown, 0 Unchecked, 68545.71ms Time] [2021-11-13 18:49:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10208 states. [2021-11-13 18:49:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10208 to 8308. [2021-11-13 18:49:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8308 states, 5620 states have (on average 1.306405693950178) internal successors, (7342), 5711 states have internal predecessors, (7342), 2110 states have call successors, (2110), 580 states have call predecessors, (2110), 577 states have return successors, (2103), 2088 states have call predecessors, (2103), 2103 states have call successors, (2103) [2021-11-13 18:49:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8308 states to 8308 states and 11555 transitions. [2021-11-13 18:49:40,733 INFO L78 Accepts]: Start accepts. Automaton has 8308 states and 11555 transitions. Word has length 41 [2021-11-13 18:49:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:40,734 INFO L470 AbstractCegarLoop]: Abstraction has 8308 states and 11555 transitions. [2021-11-13 18:49:40,735 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) [2021-11-13 18:49:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8308 states and 11555 transitions. [2021-11-13 18:49:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 18:49:40,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:40,736 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] [2021-11-13 18:49:40,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:49:40,737 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash 993998376, now seen corresponding path program 1 times [2021-11-13 18:49:40,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:40,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592289500] [2021-11-13 18:49:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:40,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:49:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:49:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:41,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:41,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592289500] [2021-11-13 18:49:41,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592289500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:41,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:41,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:49:41,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587653326] [2021-11-13 18:49:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:41,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:49:41,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:49:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:41,171 INFO L87 Difference]: Start difference. First operand 8308 states and 11555 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) [2021-11-13 18:49:43,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:46,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:48,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:55,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:02,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:08,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:14,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:15,357 INFO L93 Difference]: Finished difference Result 10193 states and 14603 transitions. [2021-11-13 18:50:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:50:15,358 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 [2021-11-13 18:50:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:15,409 INFO L225 Difference]: With dead ends: 10193 [2021-11-13 18:50:15,409 INFO L226 Difference]: Without dead ends: 10190 [2021-11-13 18:50:15,417 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 [2021-11-13 18:50:15,418 INFO L933 BasicCegarLoop]: 3333 mSDtfsCounter, 4357 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 2176 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31932.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 6189 SdHoareTripleChecker+Invalid, 4525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.22ms SdHoareTripleChecker+Time, 2176 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33674.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:15,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4700 Valid, 6189 Invalid, 4525 Unknown, 0 Unchecked, 41.22ms Time], IncrementalHoareTripleChecker [2176 Valid, 2345 Invalid, 4 Unknown, 0 Unchecked, 33674.20ms Time] [2021-11-13 18:50:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2021-11-13 18:50:16,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 8307. [2021-11-13 18:50:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 5620 states have (on average 1.3062277580071175) internal successors, (7341), 5710 states have internal predecessors, (7341), 2109 states have call successors, (2109), 580 states have call predecessors, (2109), 577 states have return successors, (2103), 2088 states have call predecessors, (2103), 2103 states have call successors, (2103) [2021-11-13 18:50:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 11553 transitions. [2021-11-13 18:50:16,103 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 11553 transitions. Word has length 40 [2021-11-13 18:50:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:16,103 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 11553 transitions. [2021-11-13 18:50:16,103 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) [2021-11-13 18:50:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 11553 transitions. [2021-11-13 18:50:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:50:16,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:16,107 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] [2021-11-13 18:50:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:50:16,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 747995506, now seen corresponding path program 1 times [2021-11-13 18:50:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:16,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528520174] [2021-11-13 18:50:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:16,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:50:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:50:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:50:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:16,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:16,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528520174] [2021-11-13 18:50:16,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528520174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:16,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:16,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:50:16,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845425456] [2021-11-13 18:50:16,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:16,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:50:16,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:16,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:50:16,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:50:16,474 INFO L87 Difference]: Start difference. First operand 8307 states and 11553 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) [2021-11-13 18:50:18,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:21,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:34,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:35,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:37,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:41,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:43,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:45,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:48,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:48,290 INFO L93 Difference]: Finished difference Result 12286 states and 17230 transitions. [2021-11-13 18:50:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:50:48,291 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 [2021-11-13 18:50:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:48,350 INFO L225 Difference]: With dead ends: 12286 [2021-11-13 18:50:48,350 INFO L226 Difference]: Without dead ends: 12282 [2021-11-13 18:50:48,359 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 [2021-11-13 18:50:48,360 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 3174 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 2539 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29486.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 7736 SdHoareTripleChecker+Invalid, 5026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.09ms SdHoareTripleChecker+Time, 2539 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31205.41ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:48,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3541 Valid, 7736 Invalid, 5026 Unknown, 0 Unchecked, 46.09ms Time], IncrementalHoareTripleChecker [2539 Valid, 2484 Invalid, 3 Unknown, 0 Unchecked, 31205.41ms Time] [2021-11-13 18:50:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-11-13 18:50:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 10139. [2021-11-13 18:50:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10139 states, 6836 states have (on average 1.2908133411351668) internal successors, (8824), 6956 states have internal predecessors, (8824), 2511 states have call successors, (2511), 794 states have call predecessors, (2511), 791 states have return successors, (2507), 2492 states have call predecessors, (2507), 2507 states have call successors, (2507) [2021-11-13 18:50:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10139 states to 10139 states and 13842 transitions. [2021-11-13 18:50:49,275 INFO L78 Accepts]: Start accepts. Automaton has 10139 states and 13842 transitions. Word has length 41 [2021-11-13 18:50:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:49,276 INFO L470 AbstractCegarLoop]: Abstraction has 10139 states and 13842 transitions. [2021-11-13 18:50:49,276 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) [2021-11-13 18:50:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10139 states and 13842 transitions. [2021-11-13 18:50:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 18:50:49,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:49,278 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] [2021-11-13 18:50:49,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:50:49,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:49,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 73984686, now seen corresponding path program 1 times [2021-11-13 18:50:49,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:49,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492286084] [2021-11-13 18:50:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:49,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:50:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:50:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:50:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:49,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:49,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492286084] [2021-11-13 18:50:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492286084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:49,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:49,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:50:49,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964021971] [2021-11-13 18:50:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:49,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:50:49,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:50:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:50:49,701 INFO L87 Difference]: Start difference. First operand 10139 states and 13842 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) [2021-11-13 18:50:51,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:55,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:03,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:09,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:10,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:18,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:21,505 INFO L93 Difference]: Finished difference Result 13870 states and 19364 transitions. [2021-11-13 18:51:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:51:21,505 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 [2021-11-13 18:51:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:21,577 INFO L225 Difference]: With dead ends: 13870 [2021-11-13 18:51:21,577 INFO L226 Difference]: Without dead ends: 13858 [2021-11-13 18:51:21,584 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 [2021-11-13 18:51:21,585 INFO L933 BasicCegarLoop]: 3357 mSDtfsCounter, 4591 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 2345 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29138.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 5119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.11ms SdHoareTripleChecker+Time, 2345 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31097.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:21,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 6604 Invalid, 5119 Unknown, 0 Unchecked, 48.11ms Time], IncrementalHoareTripleChecker [2345 Valid, 2771 Invalid, 3 Unknown, 0 Unchecked, 31097.37ms Time] [2021-11-13 18:51:21,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13858 states. [2021-11-13 18:51:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13858 to 11458. [2021-11-13 18:51:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11458 states, 7682 states have (on average 1.2853423587607393) internal successors, (9874), 7822 states have internal predecessors, (9874), 2867 states have call successors, (2867), 911 states have call predecessors, (2867), 908 states have return successors, (2864), 2849 states have call predecessors, (2864), 2864 states have call successors, (2864) [2021-11-13 18:51:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11458 states to 11458 states and 15605 transitions. [2021-11-13 18:51:22,443 INFO L78 Accepts]: Start accepts. Automaton has 11458 states and 15605 transitions. Word has length 44 [2021-11-13 18:51:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:22,444 INFO L470 AbstractCegarLoop]: Abstraction has 11458 states and 15605 transitions. [2021-11-13 18:51:22,444 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) [2021-11-13 18:51:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 11458 states and 15605 transitions. [2021-11-13 18:51:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:51:22,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:22,446 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] [2021-11-13 18:51:22,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:51:22,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:51:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1638571153, now seen corresponding path program 1 times [2021-11-13 18:51:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:22,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523539610] [2021-11-13 18:51:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:22,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:51:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:51:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:51:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:51:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:51:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:22,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:22,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523539610] [2021-11-13 18:51:22,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523539610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:22,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:22,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:51:22,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094238020] [2021-11-13 18:51:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:22,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:51:22,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:51:22,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:51:22,939 INFO L87 Difference]: Start difference. First operand 11458 states and 15605 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (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) [2021-11-13 18:51:25,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:27,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:29,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:34,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:36,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:39,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:42,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:44,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:50,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:51:57,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:04,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:06,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:12,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:13,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:15,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:17,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:24,077 INFO L93 Difference]: Finished difference Result 13890 states and 19400 transitions. [2021-11-13 18:52:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:52:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (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 54 [2021-11-13 18:52:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:24,149 INFO L225 Difference]: With dead ends: 13890 [2021-11-13 18:52:24,150 INFO L226 Difference]: Without dead ends: 13887 [2021-11-13 18:52:24,159 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 [2021-11-13 18:52:24,160 INFO L933 BasicCegarLoop]: 3013 mSDtfsCounter, 4185 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 6258 mSolverCounterSat, 3849 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56898.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 10117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.72ms SdHoareTripleChecker+Time, 3849 IncrementalHoareTripleChecker+Valid, 6258 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60067.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:24,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4602 Valid, 4727 Invalid, 10117 Unknown, 0 Unchecked, 66.72ms Time], IncrementalHoareTripleChecker [3849 Valid, 6258 Invalid, 10 Unknown, 0 Unchecked, 60067.83ms Time] [2021-11-13 18:52:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2021-11-13 18:52:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 11457. [2021-11-13 18:52:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11457 states, 7682 states have (on average 1.2843009632908098) internal successors, (9866), 7821 states have internal predecessors, (9866), 2866 states have call successors, (2866), 911 states have call predecessors, (2866), 908 states have return successors, (2864), 2849 states have call predecessors, (2864), 2864 states have call successors, (2864) [2021-11-13 18:52:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 15596 transitions. [2021-11-13 18:52:25,035 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 15596 transitions. Word has length 54 [2021-11-13 18:52:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:25,036 INFO L470 AbstractCegarLoop]: Abstraction has 11457 states and 15596 transitions. [2021-11-13 18:52:25,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (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) [2021-11-13 18:52:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 15596 transitions. [2021-11-13 18:52:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:52:25,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:25,039 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, 1] [2021-11-13 18:52:25,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:52:25,039 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:52:25,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -255301233, now seen corresponding path program 1 times [2021-11-13 18:52:25,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:25,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544857166] [2021-11-13 18:52:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:25,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:52:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:52:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:52:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:52:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:52:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:52:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:25,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:25,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544857166] [2021-11-13 18:52:25,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544857166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:25,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:25,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:52:25,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655577006] [2021-11-13 18:52:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:25,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:52:25,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:52:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:52:25,538 INFO L87 Difference]: Start difference. First operand 11457 states and 15596 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-13 18:52:27,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:29,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:31,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:36,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:39,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:47,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:48,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:55,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:57,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:52:59,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:00,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:02,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:12,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:18,308 INFO L93 Difference]: Finished difference Result 16187 states and 23409 transitions. [2021-11-13 18:53:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:53:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 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 59 [2021-11-13 18:53:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:18,408 INFO L225 Difference]: With dead ends: 16187 [2021-11-13 18:53:18,408 INFO L226 Difference]: Without dead ends: 16184 [2021-11-13 18:53:18,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:53:18,420 INFO L933 BasicCegarLoop]: 3571 mSDtfsCounter, 5165 mSDsluCounter, 5381 mSDsCounter, 0 mSdLazyCounter, 5448 mSolverCounterSat, 5611 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48511.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 8952 SdHoareTripleChecker+Invalid, 11065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.97ms SdHoareTripleChecker+Time, 5611 IncrementalHoareTripleChecker+Valid, 5448 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51410.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:18,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 8952 Invalid, 11065 Unknown, 0 Unchecked, 76.97ms Time], IncrementalHoareTripleChecker [5611 Valid, 5448 Invalid, 6 Unknown, 0 Unchecked, 51410.69ms Time] [2021-11-13 18:53:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16184 states. [2021-11-13 18:53:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16184 to 11456. [2021-11-13 18:53:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11456 states, 7682 states have (on average 1.2823483467846915) internal successors, (9851), 7820 states have internal predecessors, (9851), 2865 states have call successors, (2865), 911 states have call predecessors, (2865), 908 states have return successors, (2864), 2849 states have call predecessors, (2864), 2864 states have call successors, (2864) [2021-11-13 18:53:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11456 states to 11456 states and 15580 transitions. [2021-11-13 18:53:19,306 INFO L78 Accepts]: Start accepts. Automaton has 11456 states and 15580 transitions. Word has length 59 [2021-11-13 18:53:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:19,307 INFO L470 AbstractCegarLoop]: Abstraction has 11456 states and 15580 transitions. [2021-11-13 18:53:19,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-13 18:53:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11456 states and 15580 transitions. [2021-11-13 18:53:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:53:19,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:19,317 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] [2021-11-13 18:53:19,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:53:19,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:53:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash -879177529, now seen corresponding path program 1 times [2021-11-13 18:53:19,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:53:19,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819525087] [2021-11-13 18:53:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:53:19,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:53:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:53:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:53:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:53:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:53:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:53:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:53:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:53:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:53:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:53:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:53:19,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:53:19,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819525087] [2021-11-13 18:53:19,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819525087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:53:19,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:53:19,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:53:19,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851226019] [2021-11-13 18:53:19,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:53:19,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:53:19,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:53:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:53:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:53:19,980 INFO L87 Difference]: Start difference. First operand 11456 states and 15580 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) [2021-11-13 18:53:22,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:24,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:26,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:33,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:35,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:39,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:41,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:44,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:47,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:49,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:53:51,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:08,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:11,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:23,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:24,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:25,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:26,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:28,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:38,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:54:59,661 INFO L93 Difference]: Finished difference Result 30207 states and 42022 transitions. [2021-11-13 18:54:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:54:59,662 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 [2021-11-13 18:54:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:54:59,766 INFO L225 Difference]: With dead ends: 30207 [2021-11-13 18:54:59,766 INFO L226 Difference]: Without dead ends: 18759 [2021-11-13 18:54:59,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:54:59,826 INFO L933 BasicCegarLoop]: 3813 mSDtfsCounter, 10801 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 12075 mSolverCounterSat, 9375 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91727.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11373 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 21462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 165.34ms SdHoareTripleChecker+Time, 9375 IncrementalHoareTripleChecker+Valid, 12075 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97744.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:54:59,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11373 Valid, 8251 Invalid, 21462 Unknown, 0 Unchecked, 165.34ms Time], IncrementalHoareTripleChecker [9375 Valid, 12075 Invalid, 12 Unknown, 0 Unchecked, 97744.38ms Time] [2021-11-13 18:54:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18759 states. [2021-11-13 18:55:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18759 to 14768. [2021-11-13 18:55:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14768 states, 9840 states have (on average 1.279369918699187) internal successors, (12589), 10028 states have internal predecessors, (12589), 3773 states have call successors, (3773), 1155 states have call predecessors, (3773), 1154 states have return successors, (3772), 3753 states have call predecessors, (3772), 3772 states have call successors, (3772) [2021-11-13 18:55:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14768 states to 14768 states and 20134 transitions. [2021-11-13 18:55:01,021 INFO L78 Accepts]: Start accepts. Automaton has 14768 states and 20134 transitions. Word has length 90 [2021-11-13 18:55:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:01,022 INFO L470 AbstractCegarLoop]: Abstraction has 14768 states and 20134 transitions. [2021-11-13 18:55:01,022 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) [2021-11-13 18:55:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14768 states and 20134 transitions. [2021-11-13 18:55:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 18:55:01,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:01,031 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] [2021-11-13 18:55:01,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:55:01,032 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1439877307, now seen corresponding path program 1 times [2021-11-13 18:55:01,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:01,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431087029] [2021-11-13 18:55:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:01,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:55:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:55:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:55:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:55:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:55:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:55:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:55:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:55:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 18:55:01,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:01,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431087029] [2021-11-13 18:55:01,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431087029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:01,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:01,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:55:01,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031888019] [2021-11-13 18:55:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:01,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:55:01,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:01,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:55:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:55:01,588 INFO L87 Difference]: Start difference. First operand 14768 states and 20134 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) [2021-11-13 18:55:03,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:05,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:07,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:12,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:14,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:18,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:20,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:22,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:32,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:34,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:41,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:43,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:51,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:55,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:00,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:01,432 INFO L93 Difference]: Finished difference Result 26544 states and 36531 transitions. [2021-11-13 18:56:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:56:01,433 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 [2021-11-13 18:56:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:01,486 INFO L225 Difference]: With dead ends: 26544 [2021-11-13 18:56:01,487 INFO L226 Difference]: Without dead ends: 11782 [2021-11-13 18:56:01,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:56:01,531 INFO L933 BasicCegarLoop]: 2910 mSDtfsCounter, 4011 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 5999 mSolverCounterSat, 3712 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55245.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4432 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 9719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.25ms SdHoareTripleChecker+Time, 3712 IncrementalHoareTripleChecker+Valid, 5999 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58818.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:01,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4432 Valid, 4888 Invalid, 9719 Unknown, 0 Unchecked, 69.25ms Time], IncrementalHoareTripleChecker [3712 Valid, 5999 Invalid, 8 Unknown, 0 Unchecked, 58818.75ms Time] [2021-11-13 18:56:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11782 states. [2021-11-13 18:56:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11782 to 9720. [2021-11-13 18:56:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9720 states, 6490 states have (on average 1.278582434514638) internal successors, (8298), 6613 states have internal predecessors, (8298), 2456 states have call successors, (2456), 774 states have call predecessors, (2456), 773 states have return successors, (2455), 2443 states have call predecessors, (2455), 2455 states have call successors, (2455) [2021-11-13 18:56:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9720 states to 9720 states and 13209 transitions. [2021-11-13 18:56:02,282 INFO L78 Accepts]: Start accepts. Automaton has 9720 states and 13209 transitions. Word has length 90 [2021-11-13 18:56:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:02,283 INFO L470 AbstractCegarLoop]: Abstraction has 9720 states and 13209 transitions. [2021-11-13 18:56:02,283 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) [2021-11-13 18:56:02,283 INFO L276 IsEmpty]: Start isEmpty. Operand 9720 states and 13209 transitions. [2021-11-13 18:56:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:56:02,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:02,292 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] [2021-11-13 18:56:02,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:56:02,293 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 804025339, now seen corresponding path program 1 times [2021-11-13 18:56:02,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:02,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214321988] [2021-11-13 18:56:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:02,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:56:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:56:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:56:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:56:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:56:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 18:56:02,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:02,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214321988] [2021-11-13 18:56:02,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214321988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:02,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:56:02,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362428503] [2021-11-13 18:56:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:56:02,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:56:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:56:02,832 INFO L87 Difference]: Start difference. First operand 9720 states and 13209 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) [2021-11-13 18:56:04,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:07,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:13,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:15,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:19,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:22,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:24,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:26,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:32,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:34,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:36,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:40,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:45,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:54,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:09,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:10,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:12,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:14,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:27,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:35,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:43,073 INFO L93 Difference]: Finished difference Result 21877 states and 30264 transitions. [2021-11-13 18:57:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:57:43,073 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 [2021-11-13 18:57:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:43,131 INFO L225 Difference]: With dead ends: 21877 [2021-11-13 18:57:43,131 INFO L226 Difference]: Without dead ends: 15474 [2021-11-13 18:57:43,154 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 [2021-11-13 18:57:43,155 INFO L933 BasicCegarLoop]: 3595 mSDtfsCounter, 9202 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 11107 mSolverCounterSat, 8279 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92587.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9563 SdHoareTripleChecker+Valid, 6322 SdHoareTripleChecker+Invalid, 19399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 142.61ms SdHoareTripleChecker+Time, 8279 IncrementalHoareTripleChecker+Valid, 11107 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98561.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:43,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9563 Valid, 6322 Invalid, 19399 Unknown, 0 Unchecked, 142.61ms Time], IncrementalHoareTripleChecker [8279 Valid, 11107 Invalid, 13 Unknown, 0 Unchecked, 98561.14ms Time] [2021-11-13 18:57:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15474 states. [2021-11-13 18:57:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15474 to 12728. [2021-11-13 18:57:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12728 states, 8498 states have (on average 1.278183101906331) internal successors, (10862), 8661 states have internal predecessors, (10862), 3211 states have call successors, (3211), 1019 states have call predecessors, (3211), 1018 states have return successors, (3210), 3194 states have call predecessors, (3210), 3210 states have call successors, (3210) [2021-11-13 18:57:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 17283 transitions. [2021-11-13 18:57:44,088 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 17283 transitions. Word has length 107 [2021-11-13 18:57:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:44,088 INFO L470 AbstractCegarLoop]: Abstraction has 12728 states and 17283 transitions. [2021-11-13 18:57:44,088 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) [2021-11-13 18:57:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 17283 transitions. [2021-11-13 18:57:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:57:44,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:44,099 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] [2021-11-13 18:57:44,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:57:44,099 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash -799038922, now seen corresponding path program 1 times [2021-11-13 18:57:44,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:44,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310791202] [2021-11-13 18:57:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:44,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:57:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:57:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 18:57:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 18:57:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:57:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:57:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 18:57:44,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:44,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310791202] [2021-11-13 18:57:44,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310791202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:44,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:57:44,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:57:44,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865525046] [2021-11-13 18:57:44,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:57:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:57:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:57:44,559 INFO L87 Difference]: Start difference. First operand 12728 states and 17283 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) [2021-11-13 18:57:46,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:48,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:50,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:52,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:58,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:00,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:03,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:05,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:08,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:29,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:30,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []