./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--w83792d.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF --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 e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:56:35,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:56:35,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:56:35,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:56:35,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:56:35,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:56:35,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:56:35,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:56:35,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:56:35,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:56:35,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:56:35,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:56:35,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:56:35,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:56:35,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:56:35,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:56:35,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:56:35,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:56:35,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:56:36,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:56:36,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:56:36,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:56:36,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:56:36,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:56:36,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:56:36,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:56:36,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:56:36,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:56:36,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:56:36,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:56:36,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:56:36,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:56:36,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:56:36,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:56:36,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:56:36,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:56:36,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:56:36,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:56:36,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:56:36,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:56:36,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:56:36,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 05:56:36,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:56:36,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:56:36,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:56:36,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:56:36,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:56:36,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:56:36,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:56:36,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:56:36,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:56:36,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:56:36,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:56:36,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:56:36,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:56:36,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:56:36,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:56:36,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:56:36,093 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:56:36,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:56:36,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:56:36,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:56:36,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:56:36,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:36,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:56:36,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:56:36,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:56:36,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:56:36,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:56:36,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:56:36,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:56:36,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:56:36,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:56:36,099 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_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e87ce4631152faee62991e43ea4262d58cd06d3a6c93a184b0775dd51465b70f [2021-11-20 05:56:36,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:56:36,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:56:36,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:56:36,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:56:36,447 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:56:36,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-20 05:56:36,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/data/ada59a810/6bd0fdf2fa584aa48d86badcf52e5ab6/FLAG5bd9a8790 [2021-11-20 05:56:37,494 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:56:37,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-20 05:56:37,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/data/ada59a810/6bd0fdf2fa584aa48d86badcf52e5ab6/FLAG5bd9a8790 [2021-11-20 05:56:37,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/data/ada59a810/6bd0fdf2fa584aa48d86badcf52e5ab6 [2021-11-20 05:56:37,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:56:37,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:56:37,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:37,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:56:37,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:56:37,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:37" (1/1) ... [2021-11-20 05:56:37,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dc2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:37, skipping insertion in model container [2021-11-20 05:56:37,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:37" (1/1) ... [2021-11-20 05:56:37,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:56:38,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:56:39,783 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_c47ab23c-4ffe-471d-8226-f74fe2cc7151/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-11-20 05:56:39,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:40,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:56:40,361 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_c47ab23c-4ffe-471d-8226-f74fe2cc7151/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i[270348,270361] [2021-11-20 05:56:40,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:40,771 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:56:40,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40 WrapperNode [2021-11-20 05:56:40,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:40,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:40,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:56:40,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:56:40,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:40,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,263 INFO L137 Inliner]: procedures = 176, calls = 3575, calls flagged for inlining = 73, calls inlined = 65, statements flattened = 9293 [2021-11-20 05:56:41,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:41,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:56:41,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:56:41,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:56:41,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:56:41,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:56:41,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:56:41,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:56:41,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (1/1) ... [2021-11-20 05:56:41,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:41,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:41,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:56:41,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c47ab23c-4ffe-471d-8226-f74fe2cc7151/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:56:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2021-11-20 05:56:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2021-11-20 05:56:41,870 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2021-11-20 05:56:41,870 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2021-11-20 05:56:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_update_device [2021-11-20 05:56:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_update_device [2021-11-20 05:56:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2021-11-20 05:56:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2021-11-20 05:56:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-20 05:56:41,871 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-20 05:56:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:56:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2021-11-20 05:56:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2021-11-20 05:56:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-20 05:56:41,872 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-20 05:56:41,872 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2021-11-20 05:56:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2021-11-20 05:56:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure store_tolerance [2021-11-20 05:56:41,873 INFO L138 BoogieDeclarations]: Found implementation of procedure store_tolerance [2021-11-20 05:56:41,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-20 05:56:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83792d_data [2021-11-20 05:56:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwmenable [2021-11-20 05:56:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwmenable [2021-11-20 05:56:41,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:56:41,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:56:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2021-11-20 05:56:41,875 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2021-11-20 05:56:41,875 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2021-11-20 05:56:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2021-11-20 05:56:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-20 05:56:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83792d_data [2021-11-20 05:56:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp1 [2021-11-20 05:56:41,876 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp1 [2021-11-20 05:56:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2021-11-20 05:56:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2021-11-20 05:56:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2021-11-20 05:56:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2021-11-20 05:56:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure show_tolerance [2021-11-20 05:56:41,877 INFO L138 BoogieDeclarations]: Found implementation of procedure show_tolerance [2021-11-20 05:56:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm_mode [2021-11-20 05:56:41,878 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm_mode [2021-11-20 05:56:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:56:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 05:56:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 05:56:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 05:56:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 05:56:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure in_count_from_reg [2021-11-20 05:56:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure in_count_from_reg [2021-11-20 05:56:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 05:56:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 05:56:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:56:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 05:56:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 05:56:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2021-11-20 05:56:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2021-11-20 05:56:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:56:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_level [2021-11-20 05:56:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_level [2021-11-20 05:56:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp1 [2021-11-20 05:56:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp1 [2021-11-20 05:56:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp23 [2021-11-20 05:56:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp23 [2021-11-20 05:56:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2021-11-20 05:56:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2021-11-20 05:56:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:56:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2021-11-20 05:56:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2021-11-20 05:56:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:56:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_point [2021-11-20 05:56:41,885 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_point [2021-11-20 05:56:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_write_value [2021-11-20 05:56:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_write_value [2021-11-20 05:56:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2021-11-20 05:56:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2021-11-20 05:56:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure show_thermal_cruise [2021-11-20 05:56:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure show_thermal_cruise [2021-11-20 05:56:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp23 [2021-11-20 05:56:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp23 [2021-11-20 05:56:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure SENSORS_LIMIT [2021-11-20 05:56:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure SENSORS_LIMIT [2021-11-20 05:56:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2021-11-20 05:56:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2021-11-20 05:56:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:56:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_detect [2021-11-20 05:56:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_detect [2021-11-20 05:56:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm_mode [2021-11-20 05:56:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm_mode [2021-11-20 05:56:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2021-11-20 05:56:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2021-11-20 05:56:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:56:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2021-11-20 05:56:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2021-11-20 05:56:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:56:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwmenable [2021-11-20 05:56:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwmenable [2021-11-20 05:56:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure w83792d_read_value [2021-11-20 05:56:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure w83792d_read_value [2021-11-20 05:56:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-11-20 05:56:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-11-20 05:56:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2021-11-20 05:56:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2021-11-20 05:56:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure show_sf2_level [2021-11-20 05:56:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sf2_level [2021-11-20 05:56:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_dummy [2021-11-20 05:56:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_dummy [2021-11-20 05:56:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure store_thermal_cruise [2021-11-20 05:56:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure store_thermal_cruise [2021-11-20 05:56:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:56:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure store_sf2_point [2021-11-20 05:56:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sf2_point [2021-11-20 05:56:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:56:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:56:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 05:56:41,894 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 05:56:42,965 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:56:42,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:56:53,568 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:56:53,602 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:56:53,602 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:56:53,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:53 BoogieIcfgContainer [2021-11-20 05:56:53,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:56:53,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:56:53,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:56:53,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:56:53,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:56:37" (1/3) ... [2021-11-20 05:56:53,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6a8743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:53, skipping insertion in model container [2021-11-20 05:56:53,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:40" (2/3) ... [2021-11-20 05:56:53,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6a8743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:53, skipping insertion in model container [2021-11-20 05:56:53,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:53" (3/3) ... [2021-11-20 05:56:53,634 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--w83792d.ko-main.cil.out.i [2021-11-20 05:56:53,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:56:53,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:56:53,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:56:53,725 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 [2021-11-20 05:56:53,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:56:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2021-11-20 05:56:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:56:53,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:53,849 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] [2021-11-20 05:56:53,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1076657471, now seen corresponding path program 1 times [2021-11-20 05:56:53,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:53,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114818917] [2021-11-20 05:56:53,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:53,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 05:56:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:56:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:54,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:54,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114818917] [2021-11-20 05:56:54,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114818917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:54,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:54,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:56:54,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900306764] [2021-11-20 05:56:54,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:54,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:54,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:54,999 INFO L87 Difference]: Start difference. First operand has 2109 states, 1626 states have (on average 1.5412054120541205) internal successors, (2506), 1633 states have internal predecessors, (2506), 430 states have call successors, (430), 51 states have call predecessors, (430), 51 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-20 05:56:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:58,394 INFO L93 Difference]: Finished difference Result 6329 states and 10651 transitions. [2021-11-20 05:56:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:56:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 32 [2021-11-20 05:56:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:58,463 INFO L225 Difference]: With dead ends: 6329 [2021-11-20 05:56:58,463 INFO L226 Difference]: Without dead ends: 4215 [2021-11-20 05:56:58,508 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 [2021-11-20 05:56:58,515 INFO L933 BasicCegarLoop]: 3724 mSDtfsCounter, 3309 mSDsluCounter, 5968 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 9692 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:58,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3527 Valid, 9692 Invalid, 1608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [933 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 05:56:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-11-20 05:56:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4182. [2021-11-20 05:56:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 3228 states have (on average 1.5412019826517969) internal successors, (4975), 3233 states have internal predecessors, (4975), 853 states have call successors, (853), 101 states have call predecessors, (853), 100 states have return successors, (847), 847 states have call predecessors, (847), 847 states have call successors, (847) [2021-11-20 05:56:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6675 transitions. [2021-11-20 05:56:59,035 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6675 transitions. Word has length 32 [2021-11-20 05:56:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:59,036 INFO L470 AbstractCegarLoop]: Abstraction has 4182 states and 6675 transitions. [2021-11-20 05:56:59,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-20 05:56:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6675 transitions. [2021-11-20 05:56:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:56:59,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:59,042 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] [2021-11-20 05:56:59,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:56:59,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1339455529, now seen corresponding path program 1 times [2021-11-20 05:56:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567563685] [2021-11-20 05:56:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:59,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:56:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:56:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:59,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:59,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567563685] [2021-11-20 05:56:59,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567563685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:59,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:59,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:56:59,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872696042] [2021-11-20 05:56:59,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:59,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:59,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:59,784 INFO L87 Difference]: Start difference. First operand 4182 states and 6675 transitions. 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) [2021-11-20 05:57:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:02,801 INFO L93 Difference]: Finished difference Result 12564 states and 20115 transitions. [2021-11-20 05:57:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:02,802 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 [2021-11-20 05:57:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:03,005 INFO L225 Difference]: With dead ends: 12564 [2021-11-20 05:57:03,005 INFO L226 Difference]: Without dead ends: 8385 [2021-11-20 05:57:03,033 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 [2021-11-20 05:57:03,035 INFO L933 BasicCegarLoop]: 3762 mSDtfsCounter, 3304 mSDsluCounter, 6017 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 9779 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:03,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3506 Valid, 9779 Invalid, 1607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [932 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 05:57:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8385 states. [2021-11-20 05:57:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8385 to 8334. [2021-11-20 05:57:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8334 states, 6435 states have (on average 1.5412587412587413) internal successors, (9918), 6440 states have internal predecessors, (9918), 1698 states have call successors, (1698), 201 states have call predecessors, (1698), 200 states have return successors, (1692), 1692 states have call predecessors, (1692), 1692 states have call successors, (1692) [2021-11-20 05:57:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8334 states to 8334 states and 13308 transitions. [2021-11-20 05:57:03,568 INFO L78 Accepts]: Start accepts. Automaton has 8334 states and 13308 transitions. Word has length 33 [2021-11-20 05:57:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:03,568 INFO L470 AbstractCegarLoop]: Abstraction has 8334 states and 13308 transitions. [2021-11-20 05:57:03,569 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) [2021-11-20 05:57:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8334 states and 13308 transitions. [2021-11-20 05:57:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 05:57:03,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:03,573 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] [2021-11-20 05:57:03,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:57:03,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1713772628, now seen corresponding path program 1 times [2021-11-20 05:57:03,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75468809] [2021-11-20 05:57:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:03,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:57:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:57:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:04,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75468809] [2021-11-20 05:57:04,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75468809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:04,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:04,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:04,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839110964] [2021-11-20 05:57:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:04,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:04,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:04,129 INFO L87 Difference]: Start difference. First operand 8334 states and 13308 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) [2021-11-20 05:57:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:07,219 INFO L93 Difference]: Finished difference Result 25028 states and 40082 transitions. [2021-11-20 05:57:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:07,220 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 [2021-11-20 05:57:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:07,371 INFO L225 Difference]: With dead ends: 25028 [2021-11-20 05:57:07,371 INFO L226 Difference]: Without dead ends: 16697 [2021-11-20 05:57:07,429 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 [2021-11-20 05:57:07,435 INFO L933 BasicCegarLoop]: 3741 mSDtfsCounter, 3294 mSDsluCounter, 5977 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 9718 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:07,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 9718 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 05:57:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16697 states. [2021-11-20 05:57:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16697 to 16610. [2021-11-20 05:57:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 12827 states have (on average 1.540968270055352) internal successors, (19766), 12832 states have internal predecessors, (19766), 3382 states have call successors, (3382), 401 states have call predecessors, (3382), 400 states have return successors, (3376), 3376 states have call predecessors, (3376), 3376 states have call successors, (3376) [2021-11-20 05:57:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 26524 transitions. [2021-11-20 05:57:08,495 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 26524 transitions. Word has length 37 [2021-11-20 05:57:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:08,497 INFO L470 AbstractCegarLoop]: Abstraction has 16610 states and 26524 transitions. [2021-11-20 05:57:08,498 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) [2021-11-20 05:57:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 26524 transitions. [2021-11-20 05:57:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:57:08,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:08,503 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] [2021-11-20 05:57:08,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:57:08,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -400868763, now seen corresponding path program 1 times [2021-11-20 05:57:08,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:08,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514279322] [2021-11-20 05:57:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:08,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:57:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:57:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:09,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:09,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514279322] [2021-11-20 05:57:09,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514279322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:09,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:09,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:09,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14145004] [2021-11-20 05:57:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:09,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:09,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:09,140 INFO L87 Difference]: Start difference. First operand 16610 states and 26524 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) [2021-11-20 05:57:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:12,617 INFO L93 Difference]: Finished difference Result 49920 states and 79950 transitions. [2021-11-20 05:57:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:12,617 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 [2021-11-20 05:57:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:12,877 INFO L225 Difference]: With dead ends: 49920 [2021-11-20 05:57:12,877 INFO L226 Difference]: Without dead ends: 33313 [2021-11-20 05:57:13,077 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 [2021-11-20 05:57:13,086 INFO L933 BasicCegarLoop]: 3758 mSDtfsCounter, 3303 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 9753 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:13,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3520 Valid, 9753 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 05:57:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33313 states. [2021-11-20 05:57:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33313 to 33154. [2021-11-20 05:57:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33154 states, 25603 states have (on average 1.540678826699996) internal successors, (39446), 25608 states have internal predecessors, (39446), 6750 states have call successors, (6750), 801 states have call predecessors, (6750), 800 states have return successors, (6744), 6744 states have call predecessors, (6744), 6744 states have call successors, (6744) [2021-11-20 05:57:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33154 states to 33154 states and 52940 transitions. [2021-11-20 05:57:14,896 INFO L78 Accepts]: Start accepts. Automaton has 33154 states and 52940 transitions. Word has length 34 [2021-11-20 05:57:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:14,897 INFO L470 AbstractCegarLoop]: Abstraction has 33154 states and 52940 transitions. [2021-11-20 05:57:14,897 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) [2021-11-20 05:57:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 33154 states and 52940 transitions. [2021-11-20 05:57:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:57:14,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:14,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:57:14,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1596138175, now seen corresponding path program 1 times [2021-11-20 05:57:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:14,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616430534] [2021-11-20 05:57:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:14,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:15,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 05:57:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:57:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:15,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:15,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616430534] [2021-11-20 05:57:15,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616430534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:15,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:15,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:15,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918611525] [2021-11-20 05:57:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:15,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:15,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:15,530 INFO L87 Difference]: Start difference. First operand 33154 states and 52940 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-20 05:57:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:19,255 INFO L93 Difference]: Finished difference Result 99584 states and 159470 transitions. [2021-11-20 05:57:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 36 [2021-11-20 05:57:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:19,873 INFO L225 Difference]: With dead ends: 99584 [2021-11-20 05:57:19,874 INFO L226 Difference]: Without dead ends: 66433 [2021-11-20 05:57:20,121 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 [2021-11-20 05:57:20,122 INFO L933 BasicCegarLoop]: 3782 mSDtfsCounter, 3295 mSDsluCounter, 6030 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3512 SdHoareTripleChecker+Valid, 9812 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:20,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3512 Valid, 9812 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 05:57:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66433 states. [2021-11-20 05:57:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66433 to 66130. [2021-11-20 05:57:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66130 states, 51067 states have (on average 1.5402118785125423) internal successors, (78654), 51072 states have internal predecessors, (78654), 13462 states have call successors, (13462), 1601 states have call predecessors, (13462), 1600 states have return successors, (13456), 13456 states have call predecessors, (13456), 13456 states have call successors, (13456) [2021-11-20 05:57:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66130 states to 66130 states and 105572 transitions. [2021-11-20 05:57:23,918 INFO L78 Accepts]: Start accepts. Automaton has 66130 states and 105572 transitions. Word has length 36 [2021-11-20 05:57:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:23,919 INFO L470 AbstractCegarLoop]: Abstraction has 66130 states and 105572 transitions. [2021-11-20 05:57:23,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-20 05:57:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 66130 states and 105572 transitions. [2021-11-20 05:57:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:57:23,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:23,922 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] [2021-11-20 05:57:23,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:57:23,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2140018186, now seen corresponding path program 1 times [2021-11-20 05:57:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:23,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155332578] [2021-11-20 05:57:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:23,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 05:57:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:57:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:24,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:24,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155332578] [2021-11-20 05:57:24,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155332578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:24,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:24,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:24,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684674195] [2021-11-20 05:57:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:24,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:24,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:24,433 INFO L87 Difference]: Start difference. First operand 66130 states and 105572 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-20 05:57:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:30,468 INFO L93 Difference]: Finished difference Result 198640 states and 318022 transitions. [2021-11-20 05:57:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:30,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 30 [2021-11-20 05:57:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:32,163 INFO L225 Difference]: With dead ends: 198640 [2021-11-20 05:57:32,164 INFO L226 Difference]: Without dead ends: 132513 [2021-11-20 05:57:32,387 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 [2021-11-20 05:57:32,389 INFO L933 BasicCegarLoop]: 3801 mSDtfsCounter, 3301 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 9845 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:32,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3519 Valid, 9845 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 05:57:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132513 states. [2021-11-20 05:57:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132513 to 131922. [2021-11-20 05:57:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131922 states, 101867 states have (on average 1.5397135480577615) internal successors, (156846), 101872 states have internal predecessors, (156846), 26854 states have call successors, (26854), 3201 states have call predecessors, (26854), 3200 states have return successors, (26848), 26848 states have call predecessors, (26848), 26848 states have call successors, (26848) [2021-11-20 05:57:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131922 states to 131922 states and 210548 transitions. [2021-11-20 05:57:38,130 INFO L78 Accepts]: Start accepts. Automaton has 131922 states and 210548 transitions. Word has length 30 [2021-11-20 05:57:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:38,133 INFO L470 AbstractCegarLoop]: Abstraction has 131922 states and 210548 transitions. [2021-11-20 05:57:38,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-20 05:57:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 131922 states and 210548 transitions. [2021-11-20 05:57:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:57:38,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:38,140 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] [2021-11-20 05:57:38,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:57:38,141 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2053897929, now seen corresponding path program 1 times [2021-11-20 05:57:38,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:57:38,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987352824] [2021-11-20 05:57:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:38,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:57:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 05:57:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:38,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 05:57:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:38,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:57:38,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987352824] [2021-11-20 05:57:38,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987352824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:38,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:38,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:57:38,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719533014] [2021-11-20 05:57:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:38,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:38,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:57:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:38,568 INFO L87 Difference]: Start difference. First operand 131922 states and 210548 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-20 05:57:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:47,028 INFO L93 Difference]: Finished difference Result 396272 states and 634262 transitions. [2021-11-20 05:57:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:47,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 32 [2021-11-20 05:57:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:49,219 INFO L225 Difference]: With dead ends: 396272 [2021-11-20 05:57:49,219 INFO L226 Difference]: Without dead ends: 264353 [2021-11-20 05:57:49,830 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 [2021-11-20 05:57:49,831 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 3289 mSDsluCounter, 6088 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 9954 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:49,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 9954 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 05:57:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264353 states. [2021-11-20 05:58:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264353 to 263186. [2021-11-20 05:58:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263186 states, 203211 states have (on average 1.5391981733272313) internal successors, (312782), 203216 states have internal predecessors, (312782), 53574 states have call successors, (53574), 6401 states have call predecessors, (53574), 6400 states have return successors, (53568), 53568 states have call predecessors, (53568), 53568 states have call successors, (53568) [2021-11-20 05:58:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263186 states to 263186 states and 419924 transitions. [2021-11-20 05:58:02,446 INFO L78 Accepts]: Start accepts. Automaton has 263186 states and 419924 transitions. Word has length 32 [2021-11-20 05:58:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:02,446 INFO L470 AbstractCegarLoop]: Abstraction has 263186 states and 419924 transitions. [2021-11-20 05:58:02,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-20 05:58:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 263186 states and 419924 transitions. [2021-11-20 05:58:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:58:02,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:02,449 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] [2021-11-20 05:58:02,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:58:02,450 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:58:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash 393190319, now seen corresponding path program 1 times [2021-11-20 05:58:02,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:58:02,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597783582] [2021-11-20 05:58:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:02,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms