./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/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_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:18:53,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:53,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:53,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:53,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:53,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:53,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:53,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:53,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:53,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:53,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:53,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:53,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:53,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:53,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:53,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:53,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:53,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:53,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:53,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:53,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:53,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:53,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:53,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:53,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:53,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:53,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:53,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:53,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:53,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:53,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:53,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:53,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:53,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:53,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:53,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:53,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:53,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:53,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:53,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:53,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:53,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:18:53,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:53,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:53,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:53,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:53,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:53,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:53,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:53,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:53,442 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:53,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:53,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:18:53,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:53,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:53,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:53,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:53,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:53,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:53,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:53,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:53,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:53,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:53,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:53,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:53,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:53,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:53,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:18:53,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:18:53,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:53,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:53,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:53,447 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_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d253b745dee5ef05ffbbca6087a2bac9710536fabca8626c0fece9fd6b3fe837 [2022-11-16 12:18:53,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:53,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:53,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:53,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:53,807 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:53,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/../../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 [2022-11-16 12:18:53,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/data/7965aafe1/d6fd592d2fc8493c84d8bc616c582ce2/FLAG8e83bc0fc [2022-11-16 12:18:55,023 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:55,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/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 [2022-11-16 12:18:55,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/data/7965aafe1/d6fd592d2fc8493c84d8bc616c582ce2/FLAG8e83bc0fc [2022-11-16 12:18:55,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/data/7965aafe1/d6fd592d2fc8493c84d8bc616c582ce2 [2022-11-16 12:18:55,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:55,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:55,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:55,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:55,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:55,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:55" (1/1) ... [2022-11-16 12:18:55,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d468593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:55, skipping insertion in model container [2022-11-16 12:18:55,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:55" (1/1) ... [2022-11-16 12:18:55,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:55,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:58,555 WARN L229 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_4108c4cc-72c0-4e63-b5d8-5c328a68068e/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] [2022-11-16 12:18:58,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:58,868 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:59,600 WARN L229 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_4108c4cc-72c0-4e63-b5d8-5c328a68068e/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] [2022-11-16 12:18:59,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:59,802 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:59,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59 WrapperNode [2022-11-16 12:18:59,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:59,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:59,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:59,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:59,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:18:59,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,313 INFO L138 Inliner]: procedures = 480, calls = 4035, calls flagged for inlining = 166, calls inlined = 158, statements flattened = 7374 [2022-11-16 12:19:00,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:00,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:00,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:00,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:00,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:00,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:00,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:00,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:00,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:00,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:00,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:00,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4108c4cc-72c0-4e63-b5d8-5c328a68068e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-16 12:19:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_ring [2022-11-16 12:19:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure thunderbolt_shutdown_and_free [2022-11-16 12:19:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thunderbolt_shutdown_and_free [2022-11-16 12:19:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_tail_init [2022-11-16 12:19:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_tail_init [2022-11-16 12:19:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-16 12:19:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-16 12:19:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 12:19:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 12:19:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_get_drom_offset [2022-11-16 12:19:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_get_drom_offset [2022-11-16 12:19:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_free [2022-11-16 12:19:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_free [2022-11-16 12:19:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-16 12:19:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-16 12:19:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32options [2022-11-16 12:19:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32options [2022-11-16 12:19:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_active [2022-11-16 12:19:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_active [2022-11-16 12:19:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx_submit [2022-11-16 12:19:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx_submit [2022-11-16 12:19:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_disable_interrupts [2022-11-16 12:19:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_disable_interrupts [2022-11-16 12:19:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure get_route [2022-11-16 12:19:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure get_route [2022-11-16 12:19:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure check_header [2022-11-16 12:19:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure check_header [2022-11-16 12:19:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-16 12:19:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-16 12:19:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure tb_activate_pcie_devices [2022-11-16 12:19:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_activate_pcie_devices [2022-11-16 12:19:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-16 12:19:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-16 12:19:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-16 12:19:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-16 12:19:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-16 12:19:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_ring [2022-11-16 12:19:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read_raw [2022-11-16 12:19:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read_raw [2022-11-16 12:19:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:19:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_long [2022-11-16 12:19:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_long [2022-11-16 12:19:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_set_unpplugged [2022-11-16 12:19:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_set_unpplugged [2022-11-16 12:19:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 12:19:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 12:19:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc8 [2022-11-16 12:19:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc8 [2022-11-16 12:19:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ring_write_descriptors [2022-11-16 12:19:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_write_descriptors [2022-11-16 12:19:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 12:19:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 12:19:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure tb_plug_events_active [2022-11-16 12:19:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_plug_events_active [2022-11-16 12:19:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-16 12:19:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-16 12:19:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_stop [2022-11-16 12:19:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_stop [2022-11-16 12:19:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb [2022-11-16 12:19:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb [2022-11-16 12:19:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:19:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_print_error [2022-11-16 12:19:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_print_error [2022-11-16 12:19:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 12:19:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 12:19:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_add_nfc_credits [2022-11-16 12:19:00,971 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_add_nfc_credits [2022-11-16 12:19:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-16 12:19:00,972 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-16 12:19:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-16 12:19:00,973 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-16 12:19:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_start [2022-11-16 12:19:00,973 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_start [2022-11-16 12:19:00,973 INFO L130 BoogieDeclarations]: Found specification of procedure ring_start [2022-11-16 12:19:00,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_start [2022-11-16 12:19:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure ring_stop [2022-11-16 12:19:00,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_stop [2022-11-16 12:19:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_write [2022-11-16 12:19:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_write [2022-11-16 12:19:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-16 12:19:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-16 12:19:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cfg_read [2022-11-16 12:19:00,975 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cfg_read [2022-11-16 12:19:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-16 12:19:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-16 12:19:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_free [2022-11-16 12:19:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_free [2022-11-16 12:19:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:19:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure ring_interrupt_index [2022-11-16 12:19:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_interrupt_index [2022-11-16 12:19:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-16 12:19:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-16 12:19:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:19:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:19:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure tb_cap_is_basic [2022-11-16 12:19:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_cap_is_basic [2022-11-16 12:19:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure tb_upstream_port [2022-11-16 12:19:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_upstream_port [2022-11-16 12:19:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure __ring_enqueue [2022-11-16 12:19:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __ring_enqueue [2022-11-16 12:19:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-16 12:19:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-16 12:19:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-16 12:19:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-16 12:19:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-16 12:19:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-16 12:19:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb [2022-11-16 12:19:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb [2022-11-16 12:19:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_rx [2022-11-16 12:19:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_rx [2022-11-16 12:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-16 12:19:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-16 12:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure ring_desc_base [2022-11-16 12:19:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_desc_base [2022-11-16 12:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_shutdown [2022-11-16 12:19:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_shutdown [2022-11-16 12:19:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-16 12:19:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-16 12:19:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_port [2022-11-16 12:19:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_port [2022-11-16 12:19:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_active [2022-11-16 12:19:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_active [2022-11-16 12:19:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 12:19:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 12:19:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 12:19:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 12:19:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_read_n [2022-11-16 12:19:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_read_n [2022-11-16 12:19:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_tx [2022-11-16 12:19:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_tx [2022-11-16 12:19:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_read [2022-11-16 12:19:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_read [2022-11-16 12:19:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure ring_work [2022-11-16 12:19:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_work [2022-11-16 12:19:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-16 12:19:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-16 12:19:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite16desc [2022-11-16 12:19:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite16desc [2022-11-16 12:19:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_free [2022-11-16 12:19:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_free [2022-11-16 12:19:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-16 12:19:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-16 12:19:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure tb_find_cap [2022-11-16 12:19:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_find_cap [2022-11-16 12:19:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 12:19:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 12:19:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 12:19:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 12:19:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_deactivate [2022-11-16 12:19:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_deactivate [2022-11-16 12:19:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_write [2022-11-16 12:19:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_write [2022-11-16 12:19:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-16 12:19:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-16 12:19:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:19:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:19:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_pkg_alloc [2022-11-16 12:19:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_pkg_alloc [2022-11-16 12:19:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_suspend_noirq [2022-11-16 12:19:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_suspend_noirq [2022-11-16 12:19:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_ctl_read [2022-11-16 12:19:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_ctl_read [2022-11-16 12:19:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 12:19:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 12:19:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_port_active [2022-11-16 12:19:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_port_active [2022-11-16 12:19:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_suspend [2022-11-16 12:19:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_suspend [2022-11-16 12:19:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_alloc [2022-11-16 12:19:01,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_alloc [2022-11-16 12:19:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-16 12:19:01,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-16 12:19:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure tb_drom_read_uid_only [2022-11-16 12:19:01,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_drom_read_uid_only [2022-11-16 12:19:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:19:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 12:19:01,007 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 12:19:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_write [2022-11-16 12:19:01,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_write [2022-11-16 12:19:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_activate [2022-11-16 12:19:01,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_activate [2022-11-16 12:19:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_interrupt_work [2022-11-16 12:19:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_interrupt_work [2022-11-16 12:19:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:19:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-16 12:19:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-16 12:19:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-16 12:19:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-16 12:19:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:19:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite32desc [2022-11-16 12:19:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite32desc [2022-11-16 12:19:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route_length [2022-11-16 12:19:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route_length [2022-11-16 12:19:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure nhi_resume_noirq [2022-11-16 12:19:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure nhi_resume_noirq [2022-11-16 12:19:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-16 12:19:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-16 12:19:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-16 12:19:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-16 12:19:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-16 12:19:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-16 12:19:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_alloc [2022-11-16 12:19:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_alloc [2022-11-16 12:19:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-16 12:19:01,013 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-16 12:19:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure ring_free [2022-11-16 12:19:01,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_free [2022-11-16 12:19:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-16 12:19:01,013 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-16 12:19:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure ring_iowrite64desc [2022-11-16 12:19:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_iowrite64desc [2022-11-16 12:19:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deallocate_nfc [2022-11-16 12:19:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deallocate_nfc [2022-11-16 12:19:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_unplugged_children [2022-11-16 12:19:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_unplugged_children [2022-11-16 12:19:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure tb_crc [2022-11-16 12:19:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_crc [2022-11-16 12:19:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-16 12:19:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-16 12:19:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure tb_switch_resume [2022-11-16 12:19:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_switch_resume [2022-11-16 12:19:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure tb_wait_for_port [2022-11-16 12:19:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_wait_for_port [2022-11-16 12:19:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure tb_scan_switch [2022-11-16 12:19:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_scan_switch [2022-11-16 12:19:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_restart [2022-11-16 12:19:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_restart [2022-11-16 12:19:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 12:19:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 12:19:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure check_config_address [2022-11-16 12:19:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure check_config_address [2022-11-16 12:19:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:19:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 12:19:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 12:19:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure __crc32c_le [2022-11-16 12:19:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __crc32c_le [2022-11-16 12:19:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kcalloc [2022-11-16 12:19:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kcalloc [2022-11-16 12:19:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure tb_ctl_free [2022-11-16 12:19:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_ctl_free [2022-11-16 12:19:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure tb_path_is_invalid [2022-11-16 12:19:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_path_is_invalid [2022-11-16 12:19:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure dev_driver_string [2022-11-16 12:19:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_driver_string [2022-11-16 12:19:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_transfer [2022-11-16 12:19:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_transfer [2022-11-16 12:19:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_init_path [2022-11-16 12:19:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_init_path [2022-11-16 12:19:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure __tb_path_deactivate_hops [2022-11-16 12:19:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __tb_path_deactivate_hops [2022-11-16 12:19:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_free [2022-11-16 12:19:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_free [2022-11-16 12:19:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure tb_is_upstream_port [2022-11-16 12:19:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_is_upstream_port [2022-11-16 12:19:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure ring_alloc [2022-11-16 12:19:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_alloc [2022-11-16 12:19:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure make_header [2022-11-16 12:19:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure make_header [2022-11-16 12:19:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-16 12:19:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-16 12:19:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure tb_free_invalid_tunnels [2022-11-16 12:19:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_free_invalid_tunnels [2022-11-16 12:19:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-16 12:19:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-16 12:19:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure tb_port_read [2022-11-16 12:19:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_port_read [2022-11-16 12:19:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure tb_pci_deactivate [2022-11-16 12:19:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_pci_deactivate [2022-11-16 12:19:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure tb_eeprom_out [2022-11-16 12:19:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_eeprom_out [2022-11-16 12:19:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure tb_sw_write [2022-11-16 12:19:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_sw_write [2022-11-16 12:19:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-16 12:19:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_tb_nhi [2022-11-16 12:19:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:19:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure tb_route [2022-11-16 12:19:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure tb_route [2022-11-16 12:19:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-16 12:19:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_tb_nhi [2022-11-16 12:19:02,577 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:02,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:03,243 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 12:19:24,476 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:24,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:24,513 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:19:24,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:24 BoogieIcfgContainer [2022-11-16 12:19:24,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:24,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:19:24,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:19:24,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:19:24,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:55" (1/3) ... [2022-11-16 12:19:24,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024b926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:24, skipping insertion in model container [2022-11-16 12:19:24,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (2/3) ... [2022-11-16 12:19:24,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3024b926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:24, skipping insertion in model container [2022-11-16 12:19:24,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:24" (3/3) ... [2022-11-16 12:19:24,533 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--thunderbolt--thunderbolt.ko-entry_point.cil.out.i [2022-11-16 12:19:24,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:19:24,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:19:24,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:19:24,697 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ce79c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:19:24,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:19:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 2506 states, 1671 states have (on average 1.3255535607420705) internal successors, (2215), 1718 states have internal predecessors, (2215), 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) [2022-11-16 12:19:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:19:24,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:24,724 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:19:24,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1246886937, now seen corresponding path program 1 times [2022-11-16 12:19:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:24,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776052760] [2022-11-16 12:19:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:19:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:19:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:19:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:25,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:25,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776052760] [2022-11-16 12:19:25,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776052760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:25,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:25,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:19:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962513085] [2022-11-16 12:19:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:25,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:25,675 INFO L87 Difference]: Start difference. First operand has 2506 states, 1671 states have (on average 1.3255535607420705) internal successors, (2215), 1718 states have internal predecessors, (2215), 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) [2022-11-16 12:19:30,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:34,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:37,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:38,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:40,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:45,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:51,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:53,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:56,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:19:58,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:02,218 INFO L93 Difference]: Finished difference Result 5615 states and 8560 transitions. [2022-11-16 12:20:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:20:02,220 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 [2022-11-16 12:20:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:02,270 INFO L225 Difference]: With dead ends: 5615 [2022-11-16 12:20:02,270 INFO L226 Difference]: Without dead ends: 3101 [2022-11-16 12:20:02,306 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:20:02,310 INFO L413 NwaCegarLoop]: 2885 mSDtfsCounter, 1123 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 939 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 3689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:02,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 5698 Invalid, 3689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [939 Valid, 2747 Invalid, 3 Unknown, 0 Unchecked, 35.8s Time] [2022-11-16 12:20:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-11-16 12:20:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2493. [2022-11-16 12:20:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1666 states have (on average 1.3211284513805521) internal successors, (2201), 1705 states have internal predecessors, (2201), 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) [2022-11-16 12:20:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3580 transitions. [2022-11-16 12:20:02,621 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3580 transitions. Word has length 35 [2022-11-16 12:20:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3580 transitions. [2022-11-16 12:20:02,622 INFO L496 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) [2022-11-16 12:20:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3580 transitions. [2022-11-16 12:20:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:20:02,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:02,626 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:20:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:20:02,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1380900443, now seen corresponding path program 1 times [2022-11-16 12:20:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:02,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77048018] [2022-11-16 12:20:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:20:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:20:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:20:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:03,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77048018] [2022-11-16 12:20:03,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77048018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:03,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:03,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:20:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424915308] [2022-11-16 12:20:03,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:20:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:20:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:20:03,415 INFO L87 Difference]: Start difference. First operand 2493 states and 3580 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) [2022-11-16 12:20:08,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:20,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:23,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:26,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:28,973 INFO L93 Difference]: Finished difference Result 3154 states and 4642 transitions. [2022-11-16 12:20:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:20:28,973 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 [2022-11-16 12:20:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:28,993 INFO L225 Difference]: With dead ends: 3154 [2022-11-16 12:20:28,993 INFO L226 Difference]: Without dead ends: 3150 [2022-11-16 12:20:28,995 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:20:28,996 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 4911 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 3037 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 5249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3037 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:28,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 4626 Invalid, 5249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3037 Valid, 2210 Invalid, 2 Unknown, 0 Unchecked, 25.0s Time] [2022-11-16 12:20:29,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-11-16 12:20:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 2535. [2022-11-16 12:20:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 1696 states have (on average 1.315448113207547) internal successors, (2231), 1733 states have internal predecessors, (2231), 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) [2022-11-16 12:20:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3612 transitions. [2022-11-16 12:20:29,171 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3612 transitions. Word has length 35 [2022-11-16 12:20:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:29,183 INFO L495 AbstractCegarLoop]: Abstraction has 2535 states and 3612 transitions. [2022-11-16 12:20:29,183 INFO L496 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) [2022-11-16 12:20:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3612 transitions. [2022-11-16 12:20:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:20:29,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:29,186 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:20:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:20:29,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1616364807, now seen corresponding path program 1 times [2022-11-16 12:20:29,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:29,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5940866] [2022-11-16 12:20:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:20:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:20:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:20:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5940866] [2022-11-16 12:20:29,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5940866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:29,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:20:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065790306] [2022-11-16 12:20:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:29,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:20:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:20:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:20:29,519 INFO L87 Difference]: Start difference. First operand 2535 states and 3612 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) [2022-11-16 12:20:35,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:40,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:49,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:20:56,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:00,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:03,437 INFO L93 Difference]: Finished difference Result 8789 states and 12832 transitions. [2022-11-16 12:21:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:21:03,438 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 [2022-11-16 12:21:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:03,480 INFO L225 Difference]: With dead ends: 8789 [2022-11-16 12:21:03,480 INFO L226 Difference]: Without dead ends: 6262 [2022-11-16 12:21:03,493 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:21:03,494 INFO L413 NwaCegarLoop]: 3337 mSDtfsCounter, 6892 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 4320 mSolverCounterSat, 5126 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7556 SdHoareTripleChecker+Valid, 7655 SdHoareTripleChecker+Invalid, 9448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5126 IncrementalHoareTripleChecker+Valid, 4320 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:03,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7556 Valid, 7655 Invalid, 9448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5126 Valid, 4320 Invalid, 2 Unknown, 0 Unchecked, 33.1s Time] [2022-11-16 12:21:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6262 states. [2022-11-16 12:21:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6262 to 5029. [2022-11-16 12:21:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 3364 states have (on average 1.315398335315101) internal successors, (4425), 3430 states have internal predecessors, (4425), 1378 states have call successors, (1378), 287 states have call predecessors, (1378), 286 states have return successors, (1369), 1361 states have call predecessors, (1369), 1369 states have call successors, (1369) [2022-11-16 12:21:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 7172 transitions. [2022-11-16 12:21:03,839 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 7172 transitions. Word has length 36 [2022-11-16 12:21:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:03,840 INFO L495 AbstractCegarLoop]: Abstraction has 5029 states and 7172 transitions. [2022-11-16 12:21:03,840 INFO L496 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) [2022-11-16 12:21:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 7172 transitions. [2022-11-16 12:21:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 12:21:03,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:03,848 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:21:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:21:03,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1995102179, now seen corresponding path program 1 times [2022-11-16 12:21:03,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012911090] [2022-11-16 12:21:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:21:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:21:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:21:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:04,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012911090] [2022-11-16 12:21:04,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012911090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:04,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:04,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:21:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233902732] [2022-11-16 12:21:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:04,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:21:04,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:21:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:21:04,358 INFO L87 Difference]: Start difference. First operand 5029 states and 7172 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) [2022-11-16 12:21:09,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:11,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:14,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:26,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:31,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:33,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:35,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:37,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:40,636 INFO L93 Difference]: Finished difference Result 6556 states and 9493 transitions. [2022-11-16 12:21:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:21:40,636 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 [2022-11-16 12:21:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:40,679 INFO L225 Difference]: With dead ends: 6556 [2022-11-16 12:21:40,679 INFO L226 Difference]: Without dead ends: 6552 [2022-11-16 12:21:40,683 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:21:40,684 INFO L413 NwaCegarLoop]: 2835 mSDtfsCounter, 4213 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 1838 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 4941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:40,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 5783 Invalid, 4941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1838 Valid, 3098 Invalid, 5 Unknown, 0 Unchecked, 35.7s Time] [2022-11-16 12:21:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2022-11-16 12:21:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 5285. [2022-11-16 12:21:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3542 states have (on average 1.3037831733483907) internal successors, (4618), 3606 states have internal predecessors, (4618), 1396 states have call successors, (1396), 347 states have call predecessors, (1396), 346 states have return successors, (1389), 1381 states have call predecessors, (1389), 1389 states have call successors, (1389) [2022-11-16 12:21:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 7403 transitions. [2022-11-16 12:21:41,115 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 7403 transitions. Word has length 38 [2022-11-16 12:21:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:41,116 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 7403 transitions. [2022-11-16 12:21:41,117 INFO L496 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) [2022-11-16 12:21:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 7403 transitions. [2022-11-16 12:21:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:21:41,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:41,120 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:21:41,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:21:41,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2031126119, now seen corresponding path program 1 times [2022-11-16 12:21:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:41,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977412673] [2022-11-16 12:21:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:41,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:21:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:21:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:21:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:21:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:41,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977412673] [2022-11-16 12:21:41,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977412673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:41,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:21:41,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:21:41,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359765653] [2022-11-16 12:21:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:21:41,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:21:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:21:41,414 INFO L87 Difference]: Start difference. First operand 5285 states and 7403 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) [2022-11-16 12:21:45,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:53,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:21:56,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:04,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:06,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:07,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:14,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:19,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:21,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:25,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:27,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:30,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:30,064 INFO L93 Difference]: Finished difference Result 16449 states and 23462 transitions. [2022-11-16 12:22:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:22:30,064 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 [2022-11-16 12:22:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:30,126 INFO L225 Difference]: With dead ends: 16449 [2022-11-16 12:22:30,126 INFO L226 Difference]: Without dead ends: 11172 [2022-11-16 12:22:30,145 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:22:30,146 INFO L413 NwaCegarLoop]: 3887 mSDtfsCounter, 4813 mSDsluCounter, 4771 mSDsCounter, 0 mSdLazyCounter, 4310 mSolverCounterSat, 3690 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5337 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 8005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3690 IncrementalHoareTripleChecker+Valid, 4310 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:30,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5337 Valid, 8658 Invalid, 8005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3690 Valid, 4310 Invalid, 5 Unknown, 0 Unchecked, 47.6s Time] [2022-11-16 12:22:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2022-11-16 12:22:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 9017. [2022-11-16 12:22:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 6041 states have (on average 1.302929978480384) internal successors, (7871), 6147 states have internal predecessors, (7871), 2359 states have call successors, (2359), 617 states have call predecessors, (2359), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-16 12:22:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12582 transitions. [2022-11-16 12:22:30,791 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12582 transitions. Word has length 41 [2022-11-16 12:22:30,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:30,792 INFO L495 AbstractCegarLoop]: Abstraction has 9017 states and 12582 transitions. [2022-11-16 12:22:30,792 INFO L496 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) [2022-11-16 12:22:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12582 transitions. [2022-11-16 12:22:30,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 12:22:30,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:30,793 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:22:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:22:30,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2015567590, now seen corresponding path program 1 times [2022-11-16 12:22:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:30,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647089021] [2022-11-16 12:22:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:30,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:22:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:22:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:22:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:31,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:31,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647089021] [2022-11-16 12:22:31,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647089021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:22:31,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:22:31,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:22:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387843483] [2022-11-16 12:22:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:22:31,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:22:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:22:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:22:31,121 INFO L87 Difference]: Start difference. First operand 9017 states and 12582 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-11-16 12:22:35,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:52,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:57,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:22:59,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:01,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:04,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:08,761 INFO L93 Difference]: Finished difference Result 20987 states and 30018 transitions. [2022-11-16 12:23:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:08,762 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), 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 40 [2022-11-16 12:23:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:08,815 INFO L225 Difference]: With dead ends: 20987 [2022-11-16 12:23:08,816 INFO L226 Difference]: Without dead ends: 11978 [2022-11-16 12:23:08,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:08,849 INFO L413 NwaCegarLoop]: 3162 mSDtfsCounter, 1468 mSDsluCounter, 5850 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 962 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 9012 SdHoareTripleChecker+Invalid, 5038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:08,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 9012 Invalid, 5038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [962 Valid, 4074 Invalid, 2 Unknown, 0 Unchecked, 36.6s Time] [2022-11-16 12:23:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11978 states. [2022-11-16 12:23:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11978 to 9018. [2022-11-16 12:23:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 6042 states have (on average 1.3028798411122144) internal successors, (7872), 6148 states have internal predecessors, (7872), 2359 states have call successors, (2359), 617 states have call predecessors, (2359), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-16 12:23:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12583 transitions. [2022-11-16 12:23:09,576 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12583 transitions. Word has length 40 [2022-11-16 12:23:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:09,577 INFO L495 AbstractCegarLoop]: Abstraction has 9018 states and 12583 transitions. [2022-11-16 12:23:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-11-16 12:23:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12583 transitions. [2022-11-16 12:23:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 12:23:09,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:09,580 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:23:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:23:09,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1599341336, now seen corresponding path program 1 times [2022-11-16 12:23:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703643062] [2022-11-16 12:23:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:23:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:23:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703643062] [2022-11-16 12:23:09,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703643062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:09,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:09,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700110538] [2022-11-16 12:23:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:09,862 INFO L87 Difference]: Start difference. First operand 9018 states and 12583 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) [2022-11-16 12:23:13,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:15,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:27,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:29,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:35,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:37,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:40,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:42,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:47,116 INFO L93 Difference]: Finished difference Result 11158 states and 16050 transitions. [2022-11-16 12:23:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:47,117 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 [2022-11-16 12:23:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:47,169 INFO L225 Difference]: With dead ends: 11158 [2022-11-16 12:23:47,170 INFO L226 Difference]: Without dead ends: 11155 [2022-11-16 12:23:47,175 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:23:47,176 INFO L413 NwaCegarLoop]: 2795 mSDtfsCounter, 4357 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 2109 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4718 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 4862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2109 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:47,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4718 Valid, 5575 Invalid, 4862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2109 Valid, 2747 Invalid, 6 Unknown, 0 Unchecked, 36.4s Time] [2022-11-16 12:23:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2022-11-16 12:23:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 9017. [2022-11-16 12:23:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 6042 states have (on average 1.3027143330023172) internal successors, (7871), 6147 states have internal predecessors, (7871), 2358 states have call successors, (2358), 617 states have call predecessors, (2358), 616 states have return successors, (2352), 2336 states have call predecessors, (2352), 2352 states have call successors, (2352) [2022-11-16 12:23:47,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12581 transitions. [2022-11-16 12:23:47,863 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12581 transitions. Word has length 40 [2022-11-16 12:23:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:47,863 INFO L495 AbstractCegarLoop]: Abstraction has 9017 states and 12581 transitions. [2022-11-16 12:23:47,863 INFO L496 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) [2022-11-16 12:23:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12581 transitions. [2022-11-16 12:23:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:23:47,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:47,865 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:23:47,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:23:47,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1958840473, now seen corresponding path program 1 times [2022-11-16 12:23:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705583068] [2022-11-16 12:23:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:23:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:23:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:48,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705583068] [2022-11-16 12:23:48,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705583068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:48,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:48,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67096271] [2022-11-16 12:23:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:48,206 INFO L87 Difference]: Start difference. First operand 9017 states and 12581 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) [2022-11-16 12:23:52,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:23:54,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:01,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:04,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:05,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:06,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:13,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:14,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:15,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:16,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:22,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:23,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:24,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:27,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:29,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:33,571 INFO L93 Difference]: Finished difference Result 13223 states and 18633 transitions. [2022-11-16 12:24:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:24:33,573 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 [2022-11-16 12:24:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:33,627 INFO L225 Difference]: With dead ends: 13223 [2022-11-16 12:24:33,627 INFO L226 Difference]: Without dead ends: 13219 [2022-11-16 12:24:33,632 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:24:33,632 INFO L413 NwaCegarLoop]: 2993 mSDtfsCounter, 2284 mSDsluCounter, 4955 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 1305 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 7948 SdHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:33,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 7948 Invalid, 5424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1305 Valid, 4114 Invalid, 5 Unknown, 0 Unchecked, 44.2s Time] [2022-11-16 12:24:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2022-11-16 12:24:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 10821. [2022-11-16 12:24:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10821 states, 7230 states have (on average 1.2876901798063625) internal successors, (9310), 7365 states have internal predecessors, (9310), 2760 states have call successors, (2760), 831 states have call predecessors, (2760), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-16 12:24:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10821 states to 10821 states and 14826 transitions. [2022-11-16 12:24:34,472 INFO L78 Accepts]: Start accepts. Automaton has 10821 states and 14826 transitions. Word has length 41 [2022-11-16 12:24:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:34,473 INFO L495 AbstractCegarLoop]: Abstraction has 10821 states and 14826 transitions. [2022-11-16 12:24:34,473 INFO L496 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) [2022-11-16 12:24:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10821 states and 14826 transitions. [2022-11-16 12:24:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:24:34,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:34,474 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:24:34,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:24:34,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1076489426, now seen corresponding path program 1 times [2022-11-16 12:24:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:34,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015254546] [2022-11-16 12:24:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:24:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:24:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:34,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:34,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015254546] [2022-11-16 12:24:34,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015254546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:34,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:34,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:24:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110475846] [2022-11-16 12:24:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:34,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:34,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:34,815 INFO L87 Difference]: Start difference. First operand 10821 states and 14826 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) [2022-11-16 12:24:38,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:44,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:46,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:24:59,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:01,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:03,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:05,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:08,972 INFO L93 Difference]: Finished difference Result 13217 states and 18623 transitions. [2022-11-16 12:25:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:25:08,973 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 [2022-11-16 12:25:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:09,025 INFO L225 Difference]: With dead ends: 13217 [2022-11-16 12:25:09,026 INFO L226 Difference]: Without dead ends: 13205 [2022-11-16 12:25:09,032 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:25:09,032 INFO L413 NwaCegarLoop]: 2814 mSDtfsCounter, 4338 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 2099 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 4865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2099 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:09,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 5590 Invalid, 4865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2099 Valid, 2765 Invalid, 1 Unknown, 0 Unchecked, 32.9s Time] [2022-11-16 12:25:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2022-11-16 12:25:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 10811. [2022-11-16 12:25:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10811 states, 7221 states have (on average 1.2872178368647003) internal successors, (9295), 7355 states have internal predecessors, (9295), 2759 states have call successors, (2759), 831 states have call predecessors, (2759), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-16 12:25:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10811 states to 10811 states and 14810 transitions. [2022-11-16 12:25:09,899 INFO L78 Accepts]: Start accepts. Automaton has 10811 states and 14810 transitions. Word has length 44 [2022-11-16 12:25:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:09,900 INFO L495 AbstractCegarLoop]: Abstraction has 10811 states and 14810 transitions. [2022-11-16 12:25:09,900 INFO L496 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) [2022-11-16 12:25:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 10811 states and 14810 transitions. [2022-11-16 12:25:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 12:25:09,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:09,902 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:25:09,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:25:09,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash -42644710, now seen corresponding path program 1 times [2022-11-16 12:25:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:09,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144851487] [2022-11-16 12:25:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:09,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:25:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:25:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:25:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:25:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:10,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144851487] [2022-11-16 12:25:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144851487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:10,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:10,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:25:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625176052] [2022-11-16 12:25:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:10,410 INFO L87 Difference]: Start difference. First operand 10811 states and 14810 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-11-16 12:25:16,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:26,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:30,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:39,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:40,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:41,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:49,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:51,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:55,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:25:59,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:02,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:04,370 INFO L93 Difference]: Finished difference Result 13240 states and 18661 transitions. [2022-11-16 12:26:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:26:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 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 51 [2022-11-16 12:26:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:04,429 INFO L225 Difference]: With dead ends: 13240 [2022-11-16 12:26:04,429 INFO L226 Difference]: Without dead ends: 13237 [2022-11-16 12:26:04,436 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:26:04,437 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 4442 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 8345 mSolverCounterSat, 3437 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4859 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 11787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3437 IncrementalHoareTripleChecker+Valid, 8345 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:04,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4859 Valid, 2488 Invalid, 11787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3437 Valid, 8345 Invalid, 5 Unknown, 0 Unchecked, 52.3s Time] [2022-11-16 12:26:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13237 states. [2022-11-16 12:26:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13237 to 10810. [2022-11-16 12:26:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10810 states, 7221 states have (on average 1.286109957069658) internal successors, (9287), 7354 states have internal predecessors, (9287), 2758 states have call successors, (2758), 831 states have call predecessors, (2758), 830 states have return successors, (2756), 2740 states have call predecessors, (2756), 2756 states have call successors, (2756) [2022-11-16 12:26:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 14801 transitions. [2022-11-16 12:26:05,477 INFO L78 Accepts]: Start accepts. Automaton has 10810 states and 14801 transitions. Word has length 51 [2022-11-16 12:26:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:05,478 INFO L495 AbstractCegarLoop]: Abstraction has 10810 states and 14801 transitions. [2022-11-16 12:26:05,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-11-16 12:26:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states and 14801 transitions. [2022-11-16 12:26:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:26:05,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:05,480 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:26:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:26:05,480 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:26:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash -701261667, now seen corresponding path program 1 times [2022-11-16 12:26:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:05,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423427906] [2022-11-16 12:26:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:26:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:26:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:05,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:26:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:26:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 12:26:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:06,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423427906] [2022-11-16 12:26:06,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423427906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:06,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:06,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:26:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787710523] [2022-11-16 12:26:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:26:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:26:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:26:06,061 INFO L87 Difference]: Start difference. First operand 10810 states and 14801 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:26:12,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:14,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:24,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:29,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:36,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:39,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:40,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:44,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:46,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:47,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:52,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:53,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:55,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:26:57,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:01,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:03,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:05,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:07,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:09,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:15,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:18,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:20,490 INFO L93 Difference]: Finished difference Result 27336 states and 39362 transitions. [2022-11-16 12:27:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:27:20,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2022-11-16 12:27:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:20,581 INFO L225 Difference]: With dead ends: 27336 [2022-11-16 12:27:20,581 INFO L226 Difference]: Without dead ends: 16534 [2022-11-16 12:27:20,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:27:20,628 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 7865 mSDsluCounter, 7048 mSDsCounter, 0 mSdLazyCounter, 7285 mSolverCounterSat, 5994 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8212 SdHoareTripleChecker+Valid, 9878 SdHoareTripleChecker+Invalid, 13288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5994 IncrementalHoareTripleChecker+Valid, 7285 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:20,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8212 Valid, 9878 Invalid, 13288 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5994 Valid, 7285 Invalid, 9 Unknown, 0 Unchecked, 71.7s Time] [2022-11-16 12:27:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16534 states. [2022-11-16 12:27:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16534 to 10832. [2022-11-16 12:27:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10832 states, 7238 states have (on average 1.284885327438519) internal successors, (9300), 7371 states have internal predecessors, (9300), 2760 states have call successors, (2760), 834 states have call predecessors, (2760), 833 states have return successors, (2758), 2742 states have call predecessors, (2758), 2758 states have call successors, (2758) [2022-11-16 12:27:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10832 states to 10832 states and 14818 transitions. [2022-11-16 12:27:22,277 INFO L78 Accepts]: Start accepts. Automaton has 10832 states and 14818 transitions. Word has length 57 [2022-11-16 12:27:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:22,277 INFO L495 AbstractCegarLoop]: Abstraction has 10832 states and 14818 transitions. [2022-11-16 12:27:22,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:27:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 10832 states and 14818 transitions. [2022-11-16 12:27:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:27:22,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:22,280 INFO L195 NwaCegarLoop]: 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, 1] [2022-11-16 12:27:22,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:27:22,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:27:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash 571881506, now seen corresponding path program 1 times [2022-11-16 12:27:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:22,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038438601] [2022-11-16 12:27:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:22,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:27:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:27:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:27:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:27:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 12:27:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:22,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038438601] [2022-11-16 12:27:22,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038438601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:22,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:22,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:27:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647747688] [2022-11-16 12:27:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:22,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:27:22,857 INFO L87 Difference]: Start difference. First operand 10832 states and 14818 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-11-16 12:27:28,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:30,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:39,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:42,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:54,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:55,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:57,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:03,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:04,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:06,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:08,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:12,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:13,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:20,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:23,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:25,510 INFO L93 Difference]: Finished difference Result 15944 states and 23439 transitions. [2022-11-16 12:28:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:28:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 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 60 [2022-11-16 12:28:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:25,618 INFO L225 Difference]: With dead ends: 15944 [2022-11-16 12:28:25,618 INFO L226 Difference]: Without dead ends: 15941 [2022-11-16 12:28:25,625 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:28:25,626 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 4080 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 7354 mSolverCounterSat, 4148 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 9296 SdHoareTripleChecker+Invalid, 11506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4148 IncrementalHoareTripleChecker+Valid, 7354 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 9296 Invalid, 11506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4148 Valid, 7354 Invalid, 4 Unknown, 0 Unchecked, 60.0s Time] [2022-11-16 12:28:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15941 states. [2022-11-16 12:28:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15941 to 10831. [2022-11-16 12:28:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10831 states, 7238 states have (on average 1.2832274108869854) internal successors, (9288), 7370 states have internal predecessors, (9288), 2759 states have call successors, (2759), 834 states have call predecessors, (2759), 833 states have return successors, (2758), 2742 states have call predecessors, (2758), 2758 states have call successors, (2758) [2022-11-16 12:28:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14805 transitions. [2022-11-16 12:28:26,825 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14805 transitions. Word has length 60 [2022-11-16 12:28:26,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:26,825 INFO L495 AbstractCegarLoop]: Abstraction has 10831 states and 14805 transitions. [2022-11-16 12:28:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-11-16 12:28:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14805 transitions. [2022-11-16 12:28:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 12:28:26,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:26,832 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:28:26,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:28:26,832 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1553068548, now seen corresponding path program 1 times [2022-11-16 12:28:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117591778] [2022-11-16 12:28:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:28:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:28:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:28:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:28:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:28:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:28:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:28:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:28:27,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:27,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117591778] [2022-11-16 12:28:27,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117591778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:27,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:27,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:28:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5536836] [2022-11-16 12:28:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:27,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:28:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:28:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:28:27,212 INFO L87 Difference]: Start difference. First operand 10831 states and 14805 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) [2022-11-16 12:28:33,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:28:35,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:04,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:13,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:14,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:16,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:20,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:22,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:24,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:26,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:31,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:29:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:37,598 INFO L93 Difference]: Finished difference Result 20265 states and 28027 transitions. [2022-11-16 12:29:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:29:37,599 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 [2022-11-16 12:29:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:37,629 INFO L225 Difference]: With dead ends: 20265 [2022-11-16 12:29:37,629 INFO L226 Difference]: Without dead ends: 9454 [2022-11-16 12:29:37,662 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:29:37,663 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 3609 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 10456 mSolverCounterSat, 2213 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4031 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 12673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2213 IncrementalHoareTripleChecker+Valid, 10456 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:37,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4031 Valid, 2198 Invalid, 12673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2213 Valid, 10456 Invalid, 4 Unknown, 0 Unchecked, 68.5s Time] [2022-11-16 12:29:37,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2022-11-16 12:29:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 7757. [2022-11-16 12:29:38,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7757 states, 5183 states have (on average 1.280918387034536) internal successors, (6639), 5278 states have internal predecessors, (6639), 1965 states have call successors, (1965), 609 states have call predecessors, (1965), 608 states have return successors, (1964), 1952 states have call predecessors, (1964), 1964 states have call successors, (1964) [2022-11-16 12:29:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7757 states to 7757 states and 10568 transitions. [2022-11-16 12:29:38,428 INFO L78 Accepts]: Start accepts. Automaton has 7757 states and 10568 transitions. Word has length 90 [2022-11-16 12:29:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:38,428 INFO L495 AbstractCegarLoop]: Abstraction has 7757 states and 10568 transitions. [2022-11-16 12:29:38,428 INFO L496 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) [2022-11-16 12:29:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7757 states and 10568 transitions. [2022-11-16 12:29:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:29:38,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:38,434 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:29:38,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:29:38,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -135250289, now seen corresponding path program 1 times [2022-11-16 12:29:38,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:38,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799766627] [2022-11-16 12:29:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:38,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:29:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:29:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:29:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:29:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:29:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:29:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:29:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:29:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:29:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:29:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:29:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 12:29:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:29:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:38,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799766627] [2022-11-16 12:29:38,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799766627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:38,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:38,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148369858] [2022-11-16 12:29:38,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:38,850 INFO L87 Difference]: Start difference. First operand 7757 states and 10568 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 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) [2022-11-16 12:29:46,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:01,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:06,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:08,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:35,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:42,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:51,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:56,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:30:58,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:00,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:02,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:12,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:31:15,921 INFO L93 Difference]: Finished difference Result 18104 states and 25160 transitions. [2022-11-16 12:31:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:31:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 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 [2022-11-16 12:31:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:31:15,991 INFO L225 Difference]: With dead ends: 18104 [2022-11-16 12:31:15,991 INFO L226 Difference]: Without dead ends: 12668 [2022-11-16 12:31:16,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:31:16,013 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 6922 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 14149 mSolverCounterSat, 5483 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7356 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 19640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5483 IncrementalHoareTripleChecker+Valid, 14149 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:31:16,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7356 Valid, 3162 Invalid, 19640 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5483 Valid, 14149 Invalid, 8 Unknown, 0 Unchecked, 94.5s Time] [2022-11-16 12:31:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12668 states. [2022-11-16 12:31:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12668 to 10402. [2022-11-16 12:31:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6953 states have (on average 1.280885948511434) internal successors, (8906), 7086 states have internal predecessors, (8906), 2628 states have call successors, (2628), 819 states have call predecessors, (2628), 820 states have return successors, (2640), 2610 states have call predecessors, (2640), 2627 states have call successors, (2640) [2022-11-16 12:31:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14174 transitions. [2022-11-16 12:31:17,112 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14174 transitions. Word has length 107 [2022-11-16 12:31:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:31:17,112 INFO L495 AbstractCegarLoop]: Abstraction has 10402 states and 14174 transitions. [2022-11-16 12:31:17,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 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) [2022-11-16 12:31:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14174 transitions. [2022-11-16 12:31:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:31:17,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:31:17,121 INFO L195 NwaCegarLoop]: 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] [2022-11-16 12:31:17,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:31:17,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:31:17,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -965521477, now seen corresponding path program 1 times [2022-11-16 12:31:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:17,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778107354] [2022-11-16 12:31:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:31:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:31:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:31:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:31:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:31:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:31:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:31:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:31:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:31:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:31:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:31:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-16 12:31:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-16 12:31:17,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:31:17,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778107354] [2022-11-16 12:31:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778107354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:31:17,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:31:17,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:31:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572667626] [2022-11-16 12:31:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:31:17,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:31:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:31:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:31:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:31:17,694 INFO L87 Difference]: Start difference. First operand 10402 states and 14174 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) [2022-11-16 12:31:23,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:35,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:31:58,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:00,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:04,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:32:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:13,378 INFO L93 Difference]: Finished difference Result 14366 states and 20008 transitions. [2022-11-16 12:32:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:32:13,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2022-11-16 12:32:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:13,382 INFO L225 Difference]: With dead ends: 14366 [2022-11-16 12:32:13,382 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:32:13,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:32:13,449 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 6330 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 8052 mSolverCounterSat, 5767 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6513 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 13821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5767 IncrementalHoareTripleChecker+Valid, 8052 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:13,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6513 Valid, 1696 Invalid, 13821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5767 Valid, 8052 Invalid, 2 Unknown, 0 Unchecked, 53.2s Time] [2022-11-16 12:32:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:32:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:32:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:32:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:32:13,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-11-16 12:32:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:13,454 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:32:13,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:32:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:32:13,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:32:13,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:32:13,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:32:13,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 12:32:28,228 WARN L233 SmtUtils]: Spent 13.86s on a formula simplification. DAG size of input: 70 DAG size of output: 66 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)