./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ --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 178bcd25ed1eb86cc15df15af8dd3c1e4148e54d6c8cf5e12496bd14ffef1855 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:58:14,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:14,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:14,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:14,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:14,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:14,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:14,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:14,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:14,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:14,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:14,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:14,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:14,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:14,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:14,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:14,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:14,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:14,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:14,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:14,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:14,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:14,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:14,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:14,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:14,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:14,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:14,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:14,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:14,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:14,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:14,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:14,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:14,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:14,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:14,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:14,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:14,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:14,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:14,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:14,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:58:14,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:14,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:14,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:14,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:14,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:14,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:14,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:14,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:14,710 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:14,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:14,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:58:14,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:14,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:14,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:14,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:14,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:14,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:14,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:14,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:14,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:14,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:14,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:14,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:14,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:14,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:14,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:58:14,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:58:14,740 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:14,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:14,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:14,742 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_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 178bcd25ed1eb86cc15df15af8dd3c1e4148e54d6c8cf5e12496bd14ffef1855 [2022-10-17 10:58:15,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:15,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:15,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:15,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:15,129 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:15,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2022-10-17 10:58:15,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/data/e93583abe/2254f9d408194760b73ffab42fc5ea3b/FLAG53a1dd80f [2022-10-17 10:58:16,394 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:16,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2022-10-17 10:58:16,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/data/e93583abe/2254f9d408194760b73ffab42fc5ea3b/FLAG53a1dd80f [2022-10-17 10:58:16,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/data/e93583abe/2254f9d408194760b73ffab42fc5ea3b [2022-10-17 10:58:16,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:16,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:16,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:16,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:16,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:16,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:16" (1/1) ... [2022-10-17 10:58:16,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49021115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:16, skipping insertion in model container [2022-10-17 10:58:16,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:16" (1/1) ... [2022-10-17 10:58:16,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:16,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:19,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i[254705,254718] [2022-10-17 10:58:19,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:19,413 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:19,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i[254705,254718] [2022-10-17 10:58:19,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:20,903 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20 WrapperNode [2022-10-17 10:58:20,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:20,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:20,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:20,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:20,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,443 INFO L138 Inliner]: procedures = 243, calls = 6386, calls flagged for inlining = 118, calls inlined = 80, statements flattened = 7271 [2022-10-17 10:58:21,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:21,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:21,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:21,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:21,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:21,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:21,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:21,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:21,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (1/1) ... [2022-10-17 10:58:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:21,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:22,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f070dc2-d9ad-4057-aa55-b3fbeb7a319d/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_enable [2022-10-17 10:58:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_enable [2022-10-17 10:58:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:58:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:58:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_watchdog_lock_of_w83793_data [2022-10-17 10:58:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_watchdog_lock_of_w83793_data [2022-10-17 10:58:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure w83793_write_value [2022-10-17 10:58:22,047 INFO L138 BoogieDeclarations]: Found implementation of procedure w83793_write_value [2022-10-17 10:58:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_watchdog_data_mutex [2022-10-17 10:58:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_watchdog_data_mutex [2022-10-17 10:58:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure w83793_read_value [2022-10-17 10:58:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure w83793_read_value [2022-10-17 10:58:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2022-10-17 10:58:22,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2022-10-17 10:58:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:58:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:58:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:58:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:58:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-10-17 10:58:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-10-17 10:58:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 10:58:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 10:58:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 10:58:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 10:58:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-10-17 10:58:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-10-17 10:58:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:58:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-10-17 10:58:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:58:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:58:22,052 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:58:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-10-17 10:58:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-10-17 10:58:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-10-17 10:58:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-10-17 10:58:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 10:58:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 10:58:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 10:58:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 10:58:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:58:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-10-17 10:58:22,055 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-10-17 10:58:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:58:22,055 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:58:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_watchdog_lock_of_w83793_data [2022-10-17 10:58:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_watchdog_lock_of_w83793_data [2022-10-17 10:58:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:58:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-10-17 10:58:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-10-17 10:58:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:58:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:58:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:58:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:58:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_watchdog_data_mutex [2022-10-17 10:58:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_watchdog_data_mutex [2022-10-17 10:58:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_disable [2022-10-17 10:58:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_disable [2022-10-17 10:58:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:58:22,059 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:58:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_unregister [2022-10-17 10:58:22,059 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_unregister [2022-10-17 10:58:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2022-10-17 10:58:22,059 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2022-10-17 10:58:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure watchdog_trigger [2022-10-17 10:58:22,060 INFO L138 BoogieDeclarations]: Found implementation of procedure watchdog_trigger [2022-10-17 10:58:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:58:22,060 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-10-17 10:58:22,060 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-10-17 10:58:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-10-17 10:58:22,061 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-10-17 10:58:22,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:22,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:22,855 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:22,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:40,462 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:40,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:40,487 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:58:40,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:40 BoogieIcfgContainer [2022-10-17 10:58:40,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:40,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:40,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:40,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:40,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:16" (1/3) ... [2022-10-17 10:58:40,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468b24fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:40, skipping insertion in model container [2022-10-17 10:58:40,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:20" (2/3) ... [2022-10-17 10:58:40,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468b24fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:40, skipping insertion in model container [2022-10-17 10:58:40,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:40" (3/3) ... [2022-10-17 10:58:40,503 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--hwmon--w83793.ko-ldv_main0.cil.out.i [2022-10-17 10:58:40,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:40,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:58:40,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:40,615 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@344b50bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:40,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:58:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 712 states, 509 states have (on average 1.381139489194499) internal successors, (703), 523 states have internal predecessors, (703), 170 states have call successors, (170), 31 states have call predecessors, (170), 31 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2022-10-17 10:58:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:58:40,630 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:40,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:40,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1430383953, now seen corresponding path program 1 times [2022-10-17 10:58:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011456602] [2022-10-17 10:58:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:40,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:42,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011456602] [2022-10-17 10:58:42,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011456602] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:42,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:42,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:58:42,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791924646] [2022-10-17 10:58:42,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:42,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:58:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:58:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:58:42,951 INFO L87 Difference]: Start difference. First operand has 712 states, 509 states have (on average 1.381139489194499) internal successors, (703), 523 states have internal predecessors, (703), 170 states have call successors, (170), 31 states have call predecessors, (170), 31 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:43,615 INFO L93 Difference]: Finished difference Result 1418 states and 2144 transitions. [2022-10-17 10:58:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:58:43,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 10:58:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:43,656 INFO L225 Difference]: With dead ends: 1418 [2022-10-17 10:58:43,656 INFO L226 Difference]: Without dead ends: 705 [2022-10-17 10:58:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:58:43,681 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1020 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:43,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1025 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:58:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-10-17 10:58:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2022-10-17 10:58:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 505 states have (on average 1.3722772277227724) internal successors, (693), 516 states have internal predecessors, (693), 169 states have call successors, (169), 31 states have call predecessors, (169), 30 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-10-17 10:58:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1022 transitions. [2022-10-17 10:58:43,881 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1022 transitions. Word has length 9 [2022-10-17 10:58:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:43,883 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 1022 transitions. [2022-10-17 10:58:43,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1022 transitions. [2022-10-17 10:58:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:58:43,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:43,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:58:43,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1392603559, now seen corresponding path program 1 times [2022-10-17 10:58:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:43,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247201210] [2022-10-17 10:58:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:45,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:45,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247201210] [2022-10-17 10:58:45,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247201210] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:45,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:45,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:58:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985563298] [2022-10-17 10:58:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:58:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:58:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:58:45,442 INFO L87 Difference]: Start difference. First operand 705 states and 1022 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:46,010 INFO L93 Difference]: Finished difference Result 707 states and 1023 transitions. [2022-10-17 10:58:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:58:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 10:58:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:46,021 INFO L225 Difference]: With dead ends: 707 [2022-10-17 10:58:46,021 INFO L226 Difference]: Without dead ends: 704 [2022-10-17 10:58:46,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:58:46,026 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 1013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:46,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1019 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:58:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-10-17 10:58:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2022-10-17 10:58:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 505 states have (on average 1.3702970297029704) internal successors, (692), 515 states have internal predecessors, (692), 168 states have call successors, (168), 31 states have call predecessors, (168), 30 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-10-17 10:58:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1020 transitions. [2022-10-17 10:58:46,118 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1020 transitions. Word has length 10 [2022-10-17 10:58:46,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:46,119 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 1020 transitions. [2022-10-17 10:58:46,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1020 transitions. [2022-10-17 10:58:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:46,121 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:46,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:58:46,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash -221406478, now seen corresponding path program 1 times [2022-10-17 10:58:46,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:46,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954601786] [2022-10-17 10:58:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat