/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-block-paride-pt.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:43:15,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:43:15,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:43:15,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:43:15,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:43:15,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:43:15,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:43:15,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:43:15,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:43:15,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:43:15,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:43:15,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:43:15,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:43:15,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:43:15,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:43:15,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:43:15,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:43:15,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:43:15,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:43:15,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:43:15,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:43:15,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:43:15,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:43:15,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:43:15,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:43:15,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:43:15,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:43:15,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:43:15,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:43:15,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:43:15,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:43:15,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:43:15,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:43:15,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:43:15,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:43:15,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:43:15,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:43:15,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:43:15,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:43:15,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:43:15,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:43:15,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:43:15,961 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:43:15,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:43:15,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:43:15,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:43:15,964 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:43:15,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:43:15,964 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:43:15,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:43:15,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:43:15,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:43:15,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:43:15,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:43:15,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:43:15,967 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:43:15,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:43:15,967 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:43:15,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:43:15,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:43:15,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:43:15,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:43:15,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:43:15,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:43:15,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:43:15,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:43:16,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:43:16,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:43:16,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:43:16,251 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:43:16,252 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:43:16,252 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-block-paride-pt.ko.cil.out.i [2019-11-06 19:43:16,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87b6f007/44b90937f3914053897321b2efa4b3c3/FLAGefbb844f8 [2019-11-06 19:43:17,067 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:43:17,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-block-paride-pt.ko.cil.out.i [2019-11-06 19:43:17,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87b6f007/44b90937f3914053897321b2efa4b3c3/FLAGefbb844f8 [2019-11-06 19:43:17,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b87b6f007/44b90937f3914053897321b2efa4b3c3 [2019-11-06 19:43:17,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:43:17,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:43:17,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:43:17,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:43:17,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:43:17,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:17" (1/1) ... [2019-11-06 19:43:17,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2222dbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:17, skipping insertion in model container [2019-11-06 19:43:17,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:43:17" (1/1) ... [2019-11-06 19:43:17,165 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:43:17,252 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:43:18,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:43:18,307 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:43:18,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:43:18,796 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:43:18,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18 WrapperNode [2019-11-06 19:43:18,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:43:18,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:43:18,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:43:18,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:43:18,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:18,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:18,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:18,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:19,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:19,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:19,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... [2019-11-06 19:43:19,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:43:19,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:43:19,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:43:19,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:43:19,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:43:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:43:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:43:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-06 19:43:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-06 19:43:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-11-06 19:43:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-06 19:43:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-06 19:43:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-06 19:43:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-06 19:43:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-11-06 19:43:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-11-06 19:43:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 19:43:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-06 19:43:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-06 19:43:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-11-06 19:43:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-11-06 19:43:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-11-06 19:43:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-11-06 19:43:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-11-06 19:43:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-11-06 19:43:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-11-06 19:43:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-11-06 19:43:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-11-06 19:43:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-11-06 19:43:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-11-06 19:43:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-11-06 19:43:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-11-06 19:43:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 19:43:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-06 19:43:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 19:43:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-11-06 19:43:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-11-06 19:43:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-11-06 19:43:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-06 19:43:19,213 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-11-06 19:43:19,214 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-11-06 19:43:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-11-06 19:43:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 19:43:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-11-06 19:43:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-11-06 19:43:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2019-11-06 19:43:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 19:43:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:43:19,804 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 19:43:19,870 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2019-11-06 19:43:19,870 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2019-11-06 19:43:19,965 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-11-06 19:43:23,990 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 19:43:23,991 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 19:43:24,043 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false;call ULTIMATE.dealloc(~#mtop~0.base, ~#mtop~0.offset);havoc ~#mtop~0.base, ~#mtop~0.offset; [2019-11-06 19:43:24,044 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-11-06 19:43:24,044 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 19:43:24,044 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-11-06 19:43:26,442 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:43:26,443 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 19:43:26,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:26 BoogieIcfgContainer [2019-11-06 19:43:26,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:43:26,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:43:26,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:43:26,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:43:26,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:43:17" (1/3) ... [2019-11-06 19:43:26,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149d315a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:26, skipping insertion in model container [2019-11-06 19:43:26,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:43:18" (2/3) ... [2019-11-06 19:43:26,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149d315a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:43:26, skipping insertion in model container [2019-11-06 19:43:26,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:43:26" (3/3) ... [2019-11-06 19:43:26,454 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-paride-pt.ko.cil.out.i [2019-11-06 19:43:26,464 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:43:26,477 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:43:26,490 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:43:26,526 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:43:26,526 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:43:26,526 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:43:26,526 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:43:26,526 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:43:26,526 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:43:26,526 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:43:26,527 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:43:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states. [2019-11-06 19:43:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 19:43:26,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:43:26,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:43:26,578 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:43:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:43:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash -734551068, now seen corresponding path program 1 times [2019-11-06 19:43:26,592 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:43:26,593 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143602522] [2019-11-06 19:43:26,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:43:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:28,274 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 433 [2019-11-06 19:43:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:43:28,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143602522] [2019-11-06 19:43:28,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:43:28,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:43:28,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800086146] [2019-11-06 19:43:28,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 19:43:28,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:43:28,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 19:43:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:43:28,460 INFO L87 Difference]: Start difference. First operand 732 states. Second operand 6 states. [2019-11-06 19:43:33,266 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 435 [2019-11-06 19:43:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:43:54,154 INFO L93 Difference]: Finished difference Result 1606 states and 2229 transitions. [2019-11-06 19:43:54,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 19:43:54,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-11-06 19:43:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:43:54,189 INFO L225 Difference]: With dead ends: 1606 [2019-11-06 19:43:54,189 INFO L226 Difference]: Without dead ends: 888 [2019-11-06 19:43:54,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:43:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-11-06 19:43:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 848. [2019-11-06 19:43:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2019-11-06 19:43:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1137 transitions. [2019-11-06 19:43:54,621 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1137 transitions. Word has length 21 [2019-11-06 19:43:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:43:54,621 INFO L462 AbstractCegarLoop]: Abstraction has 848 states and 1137 transitions. [2019-11-06 19:43:54,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 19:43:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1137 transitions. [2019-11-06 19:43:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-06 19:43:54,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:43:54,632 INFO L410 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] [2019-11-06 19:43:54,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:43:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:43:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash -193589586, now seen corresponding path program 1 times [2019-11-06 19:43:54,633 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:43:54,633 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761389728] [2019-11-06 19:43:54,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:43:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:55,864 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 433 [2019-11-06 19:43:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:43:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:43:56,004 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761389728] [2019-11-06 19:43:56,005 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:43:56,005 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 19:43:56,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238396664] [2019-11-06 19:43:56,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 19:43:56,007 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:43:56,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 19:43:56,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 19:43:56,008 INFO L87 Difference]: Start difference. First operand 848 states and 1137 transitions. Second operand 6 states.