./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:48:20,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:48:20,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:48:20,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:48:20,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:48:20,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:48:20,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:48:20,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:48:20,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:48:20,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:48:20,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:48:20,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:48:20,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:48:20,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:48:20,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:48:20,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:48:20,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:48:20,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:48:20,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:48:20,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:48:20,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:48:20,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:48:20,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:48:20,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:48:20,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:48:20,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:48:20,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:48:20,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:48:20,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:48:20,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:48:20,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:48:20,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:48:20,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:48:20,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:48:20,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:48:20,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:48:20,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:48:20,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:48:20,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:48:20,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:48:20,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:48:20,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:48:20,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:48:20,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:48:20,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:48:20,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:48:20,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:48:20,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:48:20,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:48:20,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:48:20,948 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:48:20,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:48:20,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:48:20,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:48:20,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:48:20,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:48:20,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:48:20,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:48:20,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:48:20,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:48:20,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:48:20,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:48:20,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:48:20,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:48:20,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:48:20,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:48:20,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:48:20,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:48:20,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:48:20,955 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:48:20,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:48:20,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:48:20,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:48:20,958 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_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad6d1ed8310d8e3264189ac87472d58c77647a0c63d75779b5974e889987542 [2021-11-13 18:48:21,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:48:21,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:48:21,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:48:21,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:48:21,383 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:48:21,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-11-13 18:48:21,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/data/331250931/b72feb663a9749dbb45de28c32ed10af/FLAG825899428 [2021-11-13 18:48:22,540 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:48:22,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-11-13 18:48:22,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/data/331250931/b72feb663a9749dbb45de28c32ed10af/FLAG825899428 [2021-11-13 18:48:22,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/data/331250931/b72feb663a9749dbb45de28c32ed10af [2021-11-13 18:48:22,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:48:22,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:48:22,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:48:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:48:22,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:48:22,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:48:22" (1/1) ... [2021-11-13 18:48:22,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578496ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:22, skipping insertion in model container [2021-11-13 18:48:22,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:48:22" (1/1) ... [2021-11-13 18:48:22,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:48:23,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:48:24,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2021-11-13 18:48:24,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:48:24,725 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:48:25,157 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i[168201,168214] [2021-11-13 18:48:25,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:48:25,556 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:48:25,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25 WrapperNode [2021-11-13 18:48:25,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:48:25,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:48:25,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:48:25,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:48:25,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:25,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:25,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:48:25,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:48:25,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:48:25,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:48:25,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:25,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:48:26,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:48:26,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:48:26,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:48:26,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (1/1) ... [2021-11-13 18:48:26,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:48:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:48:26,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:48:26,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05961da4-04ee-4b69-a1d4-000c6147e26f/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:48:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_set_limit [2021-11-13 18:48:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_set_limit [2021-11-13 18:48:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:48:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-13 18:48:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-13 18:48:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-13 18:48:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-13 18:48:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_limit [2021-11-13 18:48:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_limit [2021-11-13 18:48:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_update_device [2021-11-13 18:48:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_update_device [2021-11-13 18:48:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_input [2021-11-13 18:48:26,450 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_input [2021-11-13 18:48:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_read_adc [2021-11-13 18:48:26,451 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_read_adc [2021-11-13 18:48:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:48:26,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:48:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-11-13 18:48:26,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_max16065_data [2021-11-13 18:48:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_show_alarm [2021-11-13 18:48:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_show_alarm [2021-11-13 18:48:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure LIMIT_TO_MV [2021-11-13 18:48:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure LIMIT_TO_MV [2021-11-13 18:48:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:48:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:48:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:48:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:48:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:48:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:48:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:48:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:48:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:48:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:48:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:48:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:48:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-11-13 18:48:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_max16065_data [2021-11-13 18:48:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2021-11-13 18:48:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2021-11-13 18:48:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:48:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:48:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:48:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure max16065_cleanup [2021-11-13 18:48:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure max16065_cleanup [2021-11-13 18:48:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:48:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2021-11-13 18:48:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2021-11-13 18:48:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:48:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:48:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_file [2021-11-13 18:48:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_file [2021-11-13 18:48:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:48:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:48:45,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:48:45,294 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:48:45,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:48:45 BoogieIcfgContainer [2021-11-13 18:48:45,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:48:45,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:48:45,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:48:45,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:48:45,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:48:22" (1/3) ... [2021-11-13 18:48:45,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdd0176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:48:45, skipping insertion in model container [2021-11-13 18:48:45,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:48:25" (2/3) ... [2021-11-13 18:48:45,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdd0176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:48:45, skipping insertion in model container [2021-11-13 18:48:45,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:48:45" (3/3) ... [2021-11-13 18:48:45,314 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--max16065.ko-main.cil.out.i [2021-11-13 18:48:45,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:48:45,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:48:45,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:48:45,423 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:48:45,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:48:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2021-11-13 18:48:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 18:48:45,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:45,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:45,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 497892406, now seen corresponding path program 1 times [2021-11-13 18:48:45,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:45,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858320840] [2021-11-13 18:48:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:45,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:48:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:48:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:47,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:47,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858320840] [2021-11-13 18:48:47,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858320840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:47,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:47,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:48:47,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000227640] [2021-11-13 18:48:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:47,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:48:47,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:48:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:48:47,159 INFO L87 Difference]: Start difference. First operand has 1096 states, 891 states have (on average 1.6038159371492704) internal successors, (1429), 898 states have internal predecessors, (1429), 182 states have call successors, (182), 21 states have call predecessors, (182), 21 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:48:49,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:51,968 INFO L93 Difference]: Finished difference Result 3376 states and 5931 transitions. [2021-11-13 18:48:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:48:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-11-13 18:48:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:52,039 INFO L225 Difference]: With dead ends: 3376 [2021-11-13 18:48:52,039 INFO L226 Difference]: Without dead ends: 2275 [2021-11-13 18:48:52,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:52,074 INFO L933 BasicCegarLoop]: 2060 mSDtfsCounter, 1931 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 439 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3892.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2014 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.37ms SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4396.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:52,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2014 Valid, 5461 Invalid, 814 Unknown, 0 Unchecked, 69.37ms Time], IncrementalHoareTripleChecker [439 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 4396.29ms Time] [2021-11-13 18:48:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-13 18:48:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2156. [2021-11-13 18:48:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1758 states have (on average 1.6046643913538112) internal successors, (2821), 1763 states have internal predecessors, (2821), 357 states have call successors, (357), 41 states have call predecessors, (357), 40 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2021-11-13 18:48:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3529 transitions. [2021-11-13 18:48:52,452 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3529 transitions. Word has length 33 [2021-11-13 18:48:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:52,453 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3529 transitions. [2021-11-13 18:48:52,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:48:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3529 transitions. [2021-11-13 18:48:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 18:48:52,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:52,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:52,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:48:52,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1011938999, now seen corresponding path program 1 times [2021-11-13 18:48:52,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:52,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031800315] [2021-11-13 18:48:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:52,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:48:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:48:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:53,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:53,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031800315] [2021-11-13 18:48:53,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031800315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:53,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:53,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:48:53,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65707754] [2021-11-13 18:48:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:53,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:48:53,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:48:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:48:53,168 INFO L87 Difference]: Start difference. First operand 2156 states and 3529 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:48:55,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:57,740 INFO L93 Difference]: Finished difference Result 6658 states and 11149 transitions. [2021-11-13 18:48:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:48:57,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-11-13 18:48:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:57,799 INFO L225 Difference]: With dead ends: 6658 [2021-11-13 18:48:57,799 INFO L226 Difference]: Without dead ends: 4505 [2021-11-13 18:48:57,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:48:57,817 INFO L933 BasicCegarLoop]: 2052 mSDtfsCounter, 1908 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3765.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 5356 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.58ms SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4226.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:57,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 5356 Invalid, 808 Unknown, 0 Unchecked, 43.58ms Time], IncrementalHoareTripleChecker [433 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 4226.26ms Time] [2021-11-13 18:48:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2021-11-13 18:48:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 4282. [2021-11-13 18:48:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 3495 states have (on average 1.6051502145922747) internal successors, (5610), 3500 states have internal predecessors, (5610), 706 states have call successors, (706), 81 states have call predecessors, (706), 80 states have return successors, (700), 700 states have call predecessors, (700), 700 states have call successors, (700) [2021-11-13 18:48:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 7016 transitions. [2021-11-13 18:48:58,174 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 7016 transitions. Word has length 34 [2021-11-13 18:48:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:58,175 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 7016 transitions. [2021-11-13 18:48:58,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:48:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 7016 transitions. [2021-11-13 18:48:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 18:48:58,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:58,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:58,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:48:58,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 762970933, now seen corresponding path program 1 times [2021-11-13 18:48:58,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:48:58,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68976070] [2021-11-13 18:48:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:58,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:48:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:48:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:48:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:48:58,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:48:58,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68976070] [2021-11-13 18:48:58,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68976070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:58,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:58,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:48:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93411771] [2021-11-13 18:48:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:48:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:48:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:48:58,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:48:58,871 INFO L87 Difference]: Start difference. First operand 4282 states and 7016 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:49:01,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:03,592 INFO L93 Difference]: Finished difference Result 13232 states and 22174 transitions. [2021-11-13 18:49:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:49:03,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-11-13 18:49:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:03,693 INFO L225 Difference]: With dead ends: 13232 [2021-11-13 18:49:03,693 INFO L226 Difference]: Without dead ends: 8953 [2021-11-13 18:49:03,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:03,726 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 1927 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3819.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.66ms SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4272.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:03,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 5384 Invalid, 816 Unknown, 0 Unchecked, 36.66ms Time], IncrementalHoareTripleChecker [443 Valid, 372 Invalid, 1 Unknown, 0 Unchecked, 4272.43ms Time] [2021-11-13 18:49:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8953 states. [2021-11-13 18:49:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8953 to 8522. [2021-11-13 18:49:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8522 states, 6959 states have (on average 1.6051156775398765) internal successors, (11170), 6964 states have internal predecessors, (11170), 1402 states have call successors, (1402), 161 states have call predecessors, (1402), 160 states have return successors, (1396), 1396 states have call predecessors, (1396), 1396 states have call successors, (1396) [2021-11-13 18:49:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 13968 transitions. [2021-11-13 18:49:04,351 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 13968 transitions. Word has length 37 [2021-11-13 18:49:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:04,352 INFO L470 AbstractCegarLoop]: Abstraction has 8522 states and 13968 transitions. [2021-11-13 18:49:04,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:49:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 13968 transitions. [2021-11-13 18:49:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:49:04,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:04,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:04,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:49:04,361 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash -310797271, now seen corresponding path program 1 times [2021-11-13 18:49:04,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:04,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372972500] [2021-11-13 18:49:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:04,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:49:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:05,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:05,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372972500] [2021-11-13 18:49:05,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372972500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:05,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:05,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:49:05,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735893159] [2021-11-13 18:49:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:05,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:49:05,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:49:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:49:05,010 INFO L87 Difference]: Start difference. First operand 8522 states and 13968 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:49:07,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:09,947 INFO L93 Difference]: Finished difference Result 26344 states and 44154 transitions. [2021-11-13 18:49:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:49:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-11-13 18:49:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:10,256 INFO L225 Difference]: With dead ends: 26344 [2021-11-13 18:49:10,256 INFO L226 Difference]: Without dead ends: 17825 [2021-11-13 18:49:10,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:10,316 INFO L933 BasicCegarLoop]: 2066 mSDtfsCounter, 1894 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 432 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3757.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.24ms SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4251.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:10,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 5332 Invalid, 809 Unknown, 0 Unchecked, 38.24ms Time], IncrementalHoareTripleChecker [432 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 4251.40ms Time] [2021-11-13 18:49:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17825 states. [2021-11-13 18:49:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17825 to 16978. [2021-11-13 18:49:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16978 states, 13867 states have (on average 1.6048171918944256) internal successors, (22254), 13872 states have internal predecessors, (22254), 2790 states have call successors, (2790), 321 states have call predecessors, (2790), 320 states have return successors, (2784), 2784 states have call predecessors, (2784), 2784 states have call successors, (2784) [2021-11-13 18:49:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 27828 transitions. [2021-11-13 18:49:11,782 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 27828 transitions. Word has length 41 [2021-11-13 18:49:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:11,784 INFO L470 AbstractCegarLoop]: Abstraction has 16978 states and 27828 transitions. [2021-11-13 18:49:11,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:49:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 27828 transitions. [2021-11-13 18:49:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:49:11,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:11,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:11,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:49:11,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1087085416, now seen corresponding path program 1 times [2021-11-13 18:49:11,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:11,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059646502] [2021-11-13 18:49:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:11,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 18:49:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:49:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:12,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:12,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059646502] [2021-11-13 18:49:12,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059646502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:12,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:12,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:49:12,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529506651] [2021-11-13 18:49:12,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:12,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:49:12,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:49:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:49:12,396 INFO L87 Difference]: Start difference. First operand 16978 states and 27828 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:14,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:17,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:17,757 INFO L93 Difference]: Finished difference Result 52432 states and 87862 transitions. [2021-11-13 18:49:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:49:17,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 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 46 [2021-11-13 18:49:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:18,216 INFO L225 Difference]: With dead ends: 52432 [2021-11-13 18:49:18,216 INFO L226 Difference]: Without dead ends: 35457 [2021-11-13 18:49:18,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:18,292 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1917 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3764.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.54ms SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4204.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:18,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 5210 Invalid, 819 Unknown, 0 Unchecked, 36.54ms Time], IncrementalHoareTripleChecker [443 Valid, 375 Invalid, 1 Unknown, 0 Unchecked, 4204.18ms Time] [2021-11-13 18:49:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35457 states. [2021-11-13 18:49:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35457 to 33778. [2021-11-13 18:49:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33778 states, 27595 states have (on average 1.6042761369813372) internal successors, (44270), 27600 states have internal predecessors, (44270), 5542 states have call successors, (5542), 641 states have call predecessors, (5542), 640 states have return successors, (5536), 5536 states have call predecessors, (5536), 5536 states have call successors, (5536) [2021-11-13 18:49:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33778 states to 33778 states and 55348 transitions. [2021-11-13 18:49:21,256 INFO L78 Accepts]: Start accepts. Automaton has 33778 states and 55348 transitions. Word has length 46 [2021-11-13 18:49:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:21,259 INFO L470 AbstractCegarLoop]: Abstraction has 33778 states and 55348 transitions. [2021-11-13 18:49:21,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 33778 states and 55348 transitions. [2021-11-13 18:49:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:49:21,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:21,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:21,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:49:21,264 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:21,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash 82953336, now seen corresponding path program 1 times [2021-11-13 18:49:21,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:21,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126977725] [2021-11-13 18:49:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:21,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:49:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:49:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:22,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:22,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126977725] [2021-11-13 18:49:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126977725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:22,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:22,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:49:22,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806350791] [2021-11-13 18:49:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:49:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:22,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:49:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:49:22,026 INFO L87 Difference]: Start difference. First operand 33778 states and 55348 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:24,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:28,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:28,130 INFO L93 Difference]: Finished difference Result 104336 states and 174774 transitions. [2021-11-13 18:49:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:49:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 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 41 [2021-11-13 18:49:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:28,837 INFO L225 Difference]: With dead ends: 104336 [2021-11-13 18:49:28,837 INFO L226 Difference]: Without dead ends: 70561 [2021-11-13 18:49:28,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:28,989 INFO L933 BasicCegarLoop]: 2033 mSDtfsCounter, 1911 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 438 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3900.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 5279 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.08ms SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4354.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:28,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 5279 Invalid, 816 Unknown, 0 Unchecked, 25.08ms Time], IncrementalHoareTripleChecker [438 Valid, 377 Invalid, 1 Unknown, 0 Unchecked, 4354.99ms Time] [2021-11-13 18:49:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70561 states. [2021-11-13 18:49:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70561 to 67218. [2021-11-13 18:49:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67218 states, 54923 states have (on average 1.6036633104528157) internal successors, (88078), 54928 states have internal predecessors, (88078), 11014 states have call successors, (11014), 1281 states have call predecessors, (11014), 1280 states have return successors, (11008), 11008 states have call predecessors, (11008), 11008 states have call successors, (11008) [2021-11-13 18:49:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67218 states to 67218 states and 110100 transitions. [2021-11-13 18:49:34,123 INFO L78 Accepts]: Start accepts. Automaton has 67218 states and 110100 transitions. Word has length 41 [2021-11-13 18:49:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:34,123 INFO L470 AbstractCegarLoop]: Abstraction has 67218 states and 110100 transitions. [2021-11-13 18:49:34,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 67218 states and 110100 transitions. [2021-11-13 18:49:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 18:49:34,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:34,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:34,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:49:34,128 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash -737447042, now seen corresponding path program 1 times [2021-11-13 18:49:34,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:34,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061587247] [2021-11-13 18:49:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:34,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:49:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 18:49:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:34,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:34,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061587247] [2021-11-13 18:49:34,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061587247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:34,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:34,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:49:34,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501187901] [2021-11-13 18:49:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:34,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:49:34,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:49:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:49:34,724 INFO L87 Difference]: Start difference. First operand 67218 states and 110100 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:36,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:49:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:49:42,231 INFO L93 Difference]: Finished difference Result 207664 states and 347702 transitions. [2021-11-13 18:49:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:49:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 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 47 [2021-11-13 18:49:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:49:43,443 INFO L225 Difference]: With dead ends: 207664 [2021-11-13 18:49:43,443 INFO L226 Difference]: Without dead ends: 140449 [2021-11-13 18:49:43,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:49:43,672 INFO L933 BasicCegarLoop]: 2090 mSDtfsCounter, 1906 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3498.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 5460 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.66ms SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3929.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:49:43,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 5460 Invalid, 809 Unknown, 0 Unchecked, 24.66ms Time], IncrementalHoareTripleChecker [433 Valid, 375 Invalid, 1 Unknown, 0 Unchecked, 3929.62ms Time] [2021-11-13 18:49:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140449 states. [2021-11-13 18:49:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140449 to 133778. [2021-11-13 18:49:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133778 states, 109323 states have (on average 1.6030112602105686) internal successors, (175246), 109328 states have internal predecessors, (175246), 21894 states have call successors, (21894), 2561 states have call predecessors, (21894), 2560 states have return successors, (21888), 21888 states have call predecessors, (21888), 21888 states have call successors, (21888) [2021-11-13 18:49:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133778 states to 133778 states and 219028 transitions. [2021-11-13 18:49:52,367 INFO L78 Accepts]: Start accepts. Automaton has 133778 states and 219028 transitions. Word has length 47 [2021-11-13 18:49:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:49:52,367 INFO L470 AbstractCegarLoop]: Abstraction has 133778 states and 219028 transitions. [2021-11-13 18:49:52,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 133778 states and 219028 transitions. [2021-11-13 18:49:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:49:52,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:49:52,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:52,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:49:52,377 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:49:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:49:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 198593437, now seen corresponding path program 1 times [2021-11-13 18:49:52,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:49:52,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256214216] [2021-11-13 18:49:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:49:52,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:49:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-13 18:49:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:49:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-13 18:49:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:49:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:49:52,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:49:52,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256214216] [2021-11-13 18:49:52,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256214216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:49:52,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:49:52,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:49:52,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278851962] [2021-11-13 18:49:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:49:52,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:49:52,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:49:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:49:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:49:52,885 INFO L87 Difference]: Start difference. First operand 133778 states and 219028 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:49:55,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:50:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:50:03,972 INFO L93 Difference]: Finished difference Result 413360 states and 691766 transitions. [2021-11-13 18:50:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:50:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 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 51 [2021-11-13 18:50:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:50:05,539 INFO L225 Difference]: With dead ends: 413360 [2021-11-13 18:50:05,539 INFO L226 Difference]: Without dead ends: 279585 [2021-11-13 18:50:06,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:50:06,499 INFO L933 BasicCegarLoop]: 2147 mSDtfsCounter, 1896 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 420 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3453.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 5566 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.25ms SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3906.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:50:06,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 5566 Invalid, 798 Unknown, 0 Unchecked, 24.25ms Time], IncrementalHoareTripleChecker [420 Valid, 377 Invalid, 1 Unknown, 0 Unchecked, 3906.22ms Time] [2021-11-13 18:50:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279585 states. [2021-11-13 18:50:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279585 to 266258. [2021-11-13 18:50:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266258 states, 217611 states have (on average 1.6023362789564866) internal successors, (348686), 217616 states have internal predecessors, (348686), 43526 states have call successors, (43526), 5121 states have call predecessors, (43526), 5120 states have return successors, (43520), 43520 states have call predecessors, (43520), 43520 states have call successors, (43520) [2021-11-13 18:50:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266258 states to 266258 states and 435732 transitions. [2021-11-13 18:50:21,556 INFO L78 Accepts]: Start accepts. Automaton has 266258 states and 435732 transitions. Word has length 51 [2021-11-13 18:50:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:50:21,557 INFO L470 AbstractCegarLoop]: Abstraction has 266258 states and 435732 transitions. [2021-11-13 18:50:21,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:50:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 266258 states and 435732 transitions. [2021-11-13 18:50:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-13 18:50:21,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:50:21,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:50:21,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:50:21,561 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:50:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:50:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -843141897, now seen corresponding path program 1 times [2021-11-13 18:50:21,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:50:21,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249516913] [2021-11-13 18:50:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:50:21,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:50:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:50:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:50:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:50:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:50:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:50:21,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:50:21,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249516913] [2021-11-13 18:50:21,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249516913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:50:21,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:50:21,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:50:21,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26370737] [2021-11-13 18:50:21,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:50:21,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:50:21,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:50:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:50:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:50:21,984 INFO L87 Difference]: Start difference. First operand 266258 states and 435732 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-13 18:50:24,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []