/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 23:13:05,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 23:13:05,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 23:13:05,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 23:13:05,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 23:13:05,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 23:13:05,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 23:13:05,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 23:13:05,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 23:13:05,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 23:13:05,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 23:13:05,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 23:13:05,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 23:13:05,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 23:13:05,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 23:13:05,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 23:13:05,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 23:13:05,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 23:13:05,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 23:13:05,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 23:13:06,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 23:13:06,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 23:13:06,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 23:13:06,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 23:13:06,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 23:13:06,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 23:13:06,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 23:13:06,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 23:13:06,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 23:13:06,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 23:13:06,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 23:13:06,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 23:13:06,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 23:13:06,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 23:13:06,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 23:13:06,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 23:13:06,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 23:13:06,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 23:13:06,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 23:13:06,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 23:13:06,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 23:13:06,024 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 23:13:06,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 23:13:06,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 23:13:06,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 23:13:06,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 23:13:06,054 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 23:13:06,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 23:13:06,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 23:13:06,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 23:13:06,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 23:13:06,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 23:13:06,056 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 23:13:06,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 23:13:06,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 23:13:06,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 23:13:06,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 23:13:06,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 23:13:06,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:13:06,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 23:13:06,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 23:13:06,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 23:13:06,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 23:13:06,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 23:13:06,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 23:13:06,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 23:13:06,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 23:13:06,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 23:13:06,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 23:13:06,339 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 23:13:06,340 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 23:13:06,340 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-06 23:13:06,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884899fa/cadfda318d2a42508891fab096aee0f5/FLAGd518291b2 [2019-11-06 23:13:07,071 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 23:13:07,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-06 23:13:07,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884899fa/cadfda318d2a42508891fab096aee0f5/FLAGd518291b2 [2019-11-06 23:13:07,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884899fa/cadfda318d2a42508891fab096aee0f5 [2019-11-06 23:13:07,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 23:13:07,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 23:13:07,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 23:13:07,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 23:13:07,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 23:13:07,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:13:07" (1/1) ... [2019-11-06 23:13:07,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9f3d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:07, skipping insertion in model container [2019-11-06 23:13:07,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:13:07" (1/1) ... [2019-11-06 23:13:07,253 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 23:13:07,362 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 23:13:08,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:13:08,711 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 23:13:08,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:13:09,139 INFO L192 MainTranslator]: Completed translation [2019-11-06 23:13:09,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09 WrapperNode [2019-11-06 23:13:09,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 23:13:09,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 23:13:09,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 23:13:09,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 23:13:09,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (1/1) ... [2019-11-06 23:13:09,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 23:13:09,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 23:13:09,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 23:13:09,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 23:13:09,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (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 23:13:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 23:13:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 23:13:09,468 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-11-06 23:13:09,469 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-11-06 23:13:09,469 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-11-06 23:13:09,470 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-11-06 23:13:09,470 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-11-06 23:13:09,471 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2019-11-06 23:13:09,472 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-11-06 23:13:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure register_chrdev [2019-11-06 23:13:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2019-11-06 23:13:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 23:13:09,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 23:13:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 23:13:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 23:13:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-11-06 23:13:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2019-11-06 23:13:09,478 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2019-11-06 23:13:09,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2019-11-06 23:13:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2019-11-06 23:13:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ready_wait [2019-11-06 23:13:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2019-11-06 23:13:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2019-11-06 23:13:09,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_detect [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_open [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_ioctl [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_release [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_read [2019-11-06 23:13:09,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_init [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_exit [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-11-06 23:13:09,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-11-06 23:13:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-11-06 23:13:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_12 [2019-11-06 23:13:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-11-06 23:13:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-11-06 23:13:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_15 [2019-11-06 23:13:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_chrdev_16 [2019-11-06 23:13:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2019-11-06 23:13:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 23:13:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 23:13:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 23:13:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-11-06 23:13:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-11-06 23:13:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-11-06 23:13:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-11-06 23:13:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-06 23:13:09,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-11-06 23:13:09,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-11-06 23:13:09,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-06 23:13:09,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-06 23:13:09,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-11-06 23:13:09,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-11-06 23:13:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-06 23:13:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-06 23:13:09,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-11-06 23:13:09,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-11-06 23:13:09,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_pt_mutex [2019-11-06 23:13:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2019-11-06 23:13:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_pt_mutex [2019-11-06 23:13:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-11-06 23:13:09,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_pt_mutex [2019-11-06 23:13:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2019-11-06 23:13:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 23:13:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 23:13:09,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-11-06 23:13:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2019-11-06 23:13:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_chrdev [2019-11-06 23:13:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __unregister_chrdev [2019-11-06 23:13:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-11-06 23:13:09,497 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-06 23:13:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-11-06 23:13:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-11-06 23:13:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-11-06 23:13:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-06 23:13:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-06 23:13:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-11-06 23:13:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-06 23:13:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2019-11-06 23:13:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2019-11-06 23:13:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2019-11-06 23:13:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2019-11-06 23:13:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2019-11-06 23:13:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2019-11-06 23:13:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2019-11-06 23:13:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_regr [2019-11-06 23:13:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 23:13:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2019-11-06 23:13:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-11-06 23:13:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 23:13:09,503 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 23:13:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 23:13:09,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 23:13:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 23:13:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 23:13:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-06 23:13:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-06 23:13:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-11-06 23:13:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-11-06 23:13:09,506 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-11-06 23:13:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-11-06 23:13:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 23:13:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-11-06 23:13:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 23:13:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-11-06 23:13:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2019-11-06 23:13:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-11-06 23:13:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2019-11-06 23:13:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-06 23:13:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-11-06 23:13:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2019-11-06 23:13:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-11-06 23:13:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-11-06 23:13:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-11-06 23:13:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-11-06 23:13:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-11-06 23:13:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_15 [2019-11-06 23:13:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-06 23:13:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-11-06 23:13:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-11-06 23:13:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2019-11-06 23:13:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-11-06 23:13:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_12 [2019-11-06 23:13:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-11-06 23:13:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-11-06 23:13:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-11-06 23:13:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-11-06 23:13:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-11-06 23:13:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-11-06 23:13:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2019-11-06 23:13:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2019-11-06 23:13:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 23:13:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-11-06 23:13:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure __register_chrdev [2019-11-06 23:13:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure __unregister_chrdev [2019-11-06 23:13:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure register_chrdev [2019-11-06 23:13:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_chrdev_16 [2019-11-06 23:13:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2019-11-06 23:13:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2019-11-06 23:13:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-11-06 23:13:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 23:13:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 23:13:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 23:13:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 23:13:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-11-06 23:13:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-11-06 23:13:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-11-06 23:13:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-11-06 23:13:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2019-11-06 23:13:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-06 23:13:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-11-06 23:13:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-11-06 23:13:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-06 23:13:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2019-11-06 23:13:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2019-11-06 23:13:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_regr [2019-11-06 23:13:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2019-11-06 23:13:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2019-11-06 23:13:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2019-11-06 23:13:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2019-11-06 23:13:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2019-11-06 23:13:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pt_open [2019-11-06 23:13:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ioctl [2019-11-06 23:13:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pt_release [2019-11-06 23:13:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pt_read [2019-11-06 23:13:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2019-11-06 23:13:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure pt_detect [2019-11-06 23:13:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2019-11-06 23:13:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2019-11-06 23:13:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2019-11-06 23:13:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2019-11-06 23:13:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2019-11-06 23:13:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2019-11-06 23:13:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 23:13:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2019-11-06 23:13:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2019-11-06 23:13:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2019-11-06 23:13:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 23:13:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2019-11-06 23:13:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2019-11-06 23:13:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2019-11-06 23:13:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2019-11-06 23:13:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2019-11-06 23:13:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2019-11-06 23:13:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2019-11-06 23:13:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure pt_ready_wait [2019-11-06 23:13:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2019-11-06 23:13:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2019-11-06 23:13:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 23:13:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2019-11-06 23:13:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure pt_init [2019-11-06 23:13:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure pt_exit [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 23:13:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-11-06 23:13:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-11-06 23:13:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-11-06 23:13:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-11-06 23:13:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-11-06 23:13:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-11-06 23:13:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-11-06 23:13:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-11-06 23:13:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-11-06 23:13:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-11-06 23:13:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_pt_mutex [2019-11-06 23:13:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_pt_mutex [2019-11-06 23:13:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_pt_mutex [2019-11-06 23:13:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_pt_mutex [2019-11-06 23:13:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_pt_mutex [2019-11-06 23:13:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 23:13:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 23:13:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-06 23:13:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 23:13:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 23:13:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 23:13:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 23:13:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 23:13:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 23:13:17,965 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 23:13:17,966 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 23:13:17,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:13:17 BoogieIcfgContainer [2019-11-06 23:13:17,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 23:13:17,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 23:13:17,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 23:13:17,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 23:13:17,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:13:07" (1/3) ... [2019-11-06 23:13:17,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6bce85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:13:17, skipping insertion in model container [2019-11-06 23:13:17,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:13:09" (2/3) ... [2019-11-06 23:13:17,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6bce85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:13:17, skipping insertion in model container [2019-11-06 23:13:17,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:13:17" (3/3) ... [2019-11-06 23:13:17,975 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2019-11-06 23:13:17,985 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 23:13:17,994 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 23:13:18,006 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 23:13:18,039 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 23:13:18,039 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 23:13:18,039 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 23:13:18,039 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 23:13:18,039 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 23:13:18,040 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 23:13:18,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 23:13:18,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 23:13:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states. [2019-11-06 23:13:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 23:13:18,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:18,087 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, 1] [2019-11-06 23:13:18,089 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash 272456639, now seen corresponding path program 1 times [2019-11-06 23:13:18,105 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:18,105 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003900944] [2019-11-06 23:13:18,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:18,688 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 23:13:18,689 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003900944] [2019-11-06 23:13:18,690 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:18,690 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:18,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162246546] [2019-11-06 23:13:18,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:18,697 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:18,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:18,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:18,716 INFO L87 Difference]: Start difference. First operand 928 states. Second operand 3 states. [2019-11-06 23:13:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:19,049 INFO L93 Difference]: Finished difference Result 1976 states and 2741 transitions. [2019-11-06 23:13:19,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:19,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-06 23:13:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:19,082 INFO L225 Difference]: With dead ends: 1976 [2019-11-06 23:13:19,082 INFO L226 Difference]: Without dead ends: 1153 [2019-11-06 23:13:19,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2019-11-06 23:13:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1104. [2019-11-06 23:13:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-11-06 23:13:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1486 transitions. [2019-11-06 23:13:19,313 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1486 transitions. Word has length 31 [2019-11-06 23:13:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:19,314 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1486 transitions. [2019-11-06 23:13:19,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1486 transitions. [2019-11-06 23:13:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 23:13:19,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:19,323 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, 1] [2019-11-06 23:13:19,323 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1762829340, now seen corresponding path program 1 times [2019-11-06 23:13:19,324 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:19,324 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771910041] [2019-11-06 23:13:19,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:19,545 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 23:13:19,546 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771910041] [2019-11-06 23:13:19,546 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:19,546 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 23:13:19,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106775989] [2019-11-06 23:13:19,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:13:19,548 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:13:19,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:13:19,549 INFO L87 Difference]: Start difference. First operand 1104 states and 1486 transitions. Second operand 4 states. [2019-11-06 23:13:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:21,067 INFO L93 Difference]: Finished difference Result 2197 states and 2963 transitions. [2019-11-06 23:13:21,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:21,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-06 23:13:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:21,083 INFO L225 Difference]: With dead ends: 2197 [2019-11-06 23:13:21,083 INFO L226 Difference]: Without dead ends: 1104 [2019-11-06 23:13:21,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:13:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2019-11-06 23:13:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2019-11-06 23:13:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-11-06 23:13:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1484 transitions. [2019-11-06 23:13:21,177 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1484 transitions. Word has length 31 [2019-11-06 23:13:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:21,178 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1484 transitions. [2019-11-06 23:13:21,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:13:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1484 transitions. [2019-11-06 23:13:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-06 23:13:21,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:21,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:13:21,180 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:21,180 INFO L82 PathProgramCache]: Analyzing trace with hash 958019960, now seen corresponding path program 1 times [2019-11-06 23:13:21,180 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:21,181 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164851239] [2019-11-06 23:13:21,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:21,322 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 23:13:21,322 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164851239] [2019-11-06 23:13:21,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:21,323 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:21,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793051095] [2019-11-06 23:13:21,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:21,324 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:21,324 INFO L87 Difference]: Start difference. First operand 1104 states and 1484 transitions. Second operand 3 states. [2019-11-06 23:13:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:21,441 INFO L93 Difference]: Finished difference Result 2225 states and 3007 transitions. [2019-11-06 23:13:21,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:21,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-11-06 23:13:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:21,450 INFO L225 Difference]: With dead ends: 2225 [2019-11-06 23:13:21,450 INFO L226 Difference]: Without dead ends: 1132 [2019-11-06 23:13:21,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2019-11-06 23:13:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1106. [2019-11-06 23:13:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2019-11-06 23:13:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1486 transitions. [2019-11-06 23:13:21,511 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1486 transitions. Word has length 40 [2019-11-06 23:13:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:21,512 INFO L462 AbstractCegarLoop]: Abstraction has 1106 states and 1486 transitions. [2019-11-06 23:13:21,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1486 transitions. [2019-11-06 23:13:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 23:13:21,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:21,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:13:21,514 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash -721419499, now seen corresponding path program 1 times [2019-11-06 23:13:21,514 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:21,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978616960] [2019-11-06 23:13:21,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:21,641 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 23:13:21,642 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978616960] [2019-11-06 23:13:21,642 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:21,642 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:21,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118438868] [2019-11-06 23:13:21,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:21,643 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:21,644 INFO L87 Difference]: Start difference. First operand 1106 states and 1486 transitions. Second operand 3 states. [2019-11-06 23:13:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:22,249 INFO L93 Difference]: Finished difference Result 2829 states and 3814 transitions. [2019-11-06 23:13:22,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:22,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 23:13:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:22,262 INFO L225 Difference]: With dead ends: 2829 [2019-11-06 23:13:22,263 INFO L226 Difference]: Without dead ends: 1734 [2019-11-06 23:13:22,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2019-11-06 23:13:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1730. [2019-11-06 23:13:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2019-11-06 23:13:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2330 transitions. [2019-11-06 23:13:22,352 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2330 transitions. Word has length 46 [2019-11-06 23:13:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:22,353 INFO L462 AbstractCegarLoop]: Abstraction has 1730 states and 2330 transitions. [2019-11-06 23:13:22,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2330 transitions. [2019-11-06 23:13:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 23:13:22,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:22,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:13:22,354 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash -217122663, now seen corresponding path program 1 times [2019-11-06 23:13:22,355 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:22,355 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767555122] [2019-11-06 23:13:22,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:22,479 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767555122] [2019-11-06 23:13:22,479 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:22,479 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:22,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833771750] [2019-11-06 23:13:22,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:22,480 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:22,481 INFO L87 Difference]: Start difference. First operand 1730 states and 2330 transitions. Second operand 3 states. [2019-11-06 23:13:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:22,566 INFO L93 Difference]: Finished difference Result 3469 states and 4685 transitions. [2019-11-06 23:13:22,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:22,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-11-06 23:13:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:22,579 INFO L225 Difference]: With dead ends: 3469 [2019-11-06 23:13:22,579 INFO L226 Difference]: Without dead ends: 1750 [2019-11-06 23:13:22,588 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-11-06 23:13:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1744. [2019-11-06 23:13:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2019-11-06 23:13:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2350 transitions. [2019-11-06 23:13:22,668 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2350 transitions. Word has length 49 [2019-11-06 23:13:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:22,669 INFO L462 AbstractCegarLoop]: Abstraction has 1744 states and 2350 transitions. [2019-11-06 23:13:22,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2350 transitions. [2019-11-06 23:13:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 23:13:22,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:22,670 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, 1, 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 23:13:22,671 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:22,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1429347774, now seen corresponding path program 1 times [2019-11-06 23:13:22,671 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:22,671 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689858141] [2019-11-06 23:13:22,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:22,803 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689858141] [2019-11-06 23:13:22,803 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:22,803 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:22,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49219901] [2019-11-06 23:13:22,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:22,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:22,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:22,805 INFO L87 Difference]: Start difference. First operand 1744 states and 2350 transitions. Second operand 3 states. [2019-11-06 23:13:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:22,889 INFO L93 Difference]: Finished difference Result 3529 states and 4777 transitions. [2019-11-06 23:13:22,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:22,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-11-06 23:13:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:22,902 INFO L225 Difference]: With dead ends: 3529 [2019-11-06 23:13:22,902 INFO L226 Difference]: Without dead ends: 1796 [2019-11-06 23:13:22,911 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2019-11-06 23:13:22,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1792. [2019-11-06 23:13:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2019-11-06 23:13:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2426 transitions. [2019-11-06 23:13:22,989 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2426 transitions. Word has length 55 [2019-11-06 23:13:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:22,990 INFO L462 AbstractCegarLoop]: Abstraction has 1792 states and 2426 transitions. [2019-11-06 23:13:22,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2426 transitions. [2019-11-06 23:13:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 23:13:22,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:22,991 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, 1, 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 23:13:22,991 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1358067713, now seen corresponding path program 1 times [2019-11-06 23:13:22,992 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:22,992 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550059776] [2019-11-06 23:13:22,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:23,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550059776] [2019-11-06 23:13:23,128 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:23,128 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:23,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144817095] [2019-11-06 23:13:23,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:23,129 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:23,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:23,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:23,130 INFO L87 Difference]: Start difference. First operand 1792 states and 2426 transitions. Second operand 3 states. [2019-11-06 23:13:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:23,325 INFO L93 Difference]: Finished difference Result 1814 states and 2452 transitions. [2019-11-06 23:13:23,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:23,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-11-06 23:13:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:23,337 INFO L225 Difference]: With dead ends: 1814 [2019-11-06 23:13:23,337 INFO L226 Difference]: Without dead ends: 1803 [2019-11-06 23:13:23,338 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2019-11-06 23:13:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1792. [2019-11-06 23:13:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2019-11-06 23:13:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2424 transitions. [2019-11-06 23:13:23,414 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2424 transitions. Word has length 55 [2019-11-06 23:13:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:23,415 INFO L462 AbstractCegarLoop]: Abstraction has 1792 states and 2424 transitions. [2019-11-06 23:13:23,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2424 transitions. [2019-11-06 23:13:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 23:13:23,416 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:23,416 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, 1, 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 23:13:23,417 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1300809411, now seen corresponding path program 1 times [2019-11-06 23:13:23,417 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:23,417 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629119556] [2019-11-06 23:13:23,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:23,535 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629119556] [2019-11-06 23:13:23,536 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:23,536 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:23,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744123132] [2019-11-06 23:13:23,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:23,537 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:23,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:23,537 INFO L87 Difference]: Start difference. First operand 1792 states and 2424 transitions. Second operand 3 states. [2019-11-06 23:13:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:24,309 INFO L93 Difference]: Finished difference Result 1794 states and 2425 transitions. [2019-11-06 23:13:24,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:24,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2019-11-06 23:13:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:24,325 INFO L225 Difference]: With dead ends: 1794 [2019-11-06 23:13:24,325 INFO L226 Difference]: Without dead ends: 1791 [2019-11-06 23:13:24,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2019-11-06 23:13:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1791. [2019-11-06 23:13:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1791 states. [2019-11-06 23:13:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2422 transitions. [2019-11-06 23:13:24,420 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2422 transitions. Word has length 55 [2019-11-06 23:13:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:24,420 INFO L462 AbstractCegarLoop]: Abstraction has 1791 states and 2422 transitions. [2019-11-06 23:13:24,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2422 transitions. [2019-11-06 23:13:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 23:13:24,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:24,422 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, 1, 1, 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 23:13:24,422 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:24,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:24,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1670943529, now seen corresponding path program 1 times [2019-11-06 23:13:24,422 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:24,422 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606468921] [2019-11-06 23:13:24,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:24,542 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606468921] [2019-11-06 23:13:24,542 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:24,542 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:24,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733602518] [2019-11-06 23:13:24,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:24,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:24,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:24,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:24,543 INFO L87 Difference]: Start difference. First operand 1791 states and 2422 transitions. Second operand 3 states. [2019-11-06 23:13:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:25,362 INFO L93 Difference]: Finished difference Result 1793 states and 2423 transitions. [2019-11-06 23:13:25,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:25,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-11-06 23:13:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:25,373 INFO L225 Difference]: With dead ends: 1793 [2019-11-06 23:13:25,374 INFO L226 Difference]: Without dead ends: 1790 [2019-11-06 23:13:25,375 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-11-06 23:13:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1790. [2019-11-06 23:13:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1790 states. [2019-11-06 23:13:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2420 transitions. [2019-11-06 23:13:25,457 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2420 transitions. Word has length 56 [2019-11-06 23:13:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:25,458 INFO L462 AbstractCegarLoop]: Abstraction has 1790 states and 2420 transitions. [2019-11-06 23:13:25,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2420 transitions. [2019-11-06 23:13:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 23:13:25,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:25,459 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, 1, 1, 1, 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 23:13:25,459 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash -260194432, now seen corresponding path program 1 times [2019-11-06 23:13:25,460 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:25,460 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755464041] [2019-11-06 23:13:25,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:25,572 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755464041] [2019-11-06 23:13:25,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:25,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:25,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985898713] [2019-11-06 23:13:25,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:25,573 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:25,574 INFO L87 Difference]: Start difference. First operand 1790 states and 2420 transitions. Second operand 3 states. [2019-11-06 23:13:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:26,206 INFO L93 Difference]: Finished difference Result 1792 states and 2421 transitions. [2019-11-06 23:13:26,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:26,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-11-06 23:13:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:26,218 INFO L225 Difference]: With dead ends: 1792 [2019-11-06 23:13:26,218 INFO L226 Difference]: Without dead ends: 1789 [2019-11-06 23:13:26,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2019-11-06 23:13:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1789. [2019-11-06 23:13:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2019-11-06 23:13:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2418 transitions. [2019-11-06 23:13:26,303 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2418 transitions. Word has length 57 [2019-11-06 23:13:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:26,304 INFO L462 AbstractCegarLoop]: Abstraction has 1789 states and 2418 transitions. [2019-11-06 23:13:26,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2418 transitions. [2019-11-06 23:13:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 23:13:26,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:26,305 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, 1, 1, 1, 1, 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 23:13:26,305 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:26,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash 523359482, now seen corresponding path program 1 times [2019-11-06 23:13:26,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:26,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222296467] [2019-11-06 23:13:26,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:26,421 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222296467] [2019-11-06 23:13:26,421 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:26,421 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:26,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37305005] [2019-11-06 23:13:26,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:26,422 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:26,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:26,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:26,423 INFO L87 Difference]: Start difference. First operand 1789 states and 2418 transitions. Second operand 3 states. [2019-11-06 23:13:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:26,903 INFO L93 Difference]: Finished difference Result 2224 states and 2976 transitions. [2019-11-06 23:13:26,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:26,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-06 23:13:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:26,920 INFO L225 Difference]: With dead ends: 2224 [2019-11-06 23:13:26,920 INFO L226 Difference]: Without dead ends: 2174 [2019-11-06 23:13:26,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2019-11-06 23:13:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2174. [2019-11-06 23:13:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2019-11-06 23:13:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2916 transitions. [2019-11-06 23:13:27,024 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2916 transitions. Word has length 58 [2019-11-06 23:13:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:27,025 INFO L462 AbstractCegarLoop]: Abstraction has 2174 states and 2916 transitions. [2019-11-06 23:13:27,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2916 transitions. [2019-11-06 23:13:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-06 23:13:27,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:27,039 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:27,039 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1210973165, now seen corresponding path program 1 times [2019-11-06 23:13:27,040 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:27,040 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663825000] [2019-11-06 23:13:27,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:27,192 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663825000] [2019-11-06 23:13:27,192 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:27,193 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:13:27,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70377879] [2019-11-06 23:13:27,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:13:27,193 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:27,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:13:27,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:27,194 INFO L87 Difference]: Start difference. First operand 2174 states and 2916 transitions. Second operand 5 states. [2019-11-06 23:13:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:27,318 INFO L93 Difference]: Finished difference Result 4351 states and 5841 transitions. [2019-11-06 23:13:27,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 23:13:27,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-11-06 23:13:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:27,332 INFO L225 Difference]: With dead ends: 4351 [2019-11-06 23:13:27,333 INFO L226 Difference]: Without dead ends: 2188 [2019-11-06 23:13:27,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2019-11-06 23:13:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2188. [2019-11-06 23:13:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2019-11-06 23:13:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2930 transitions. [2019-11-06 23:13:27,462 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2930 transitions. Word has length 105 [2019-11-06 23:13:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:27,463 INFO L462 AbstractCegarLoop]: Abstraction has 2188 states and 2930 transitions. [2019-11-06 23:13:27,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:13:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2930 transitions. [2019-11-06 23:13:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-06 23:13:27,467 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:27,467 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:27,467 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:27,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1551773475, now seen corresponding path program 1 times [2019-11-06 23:13:27,468 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:27,468 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643117627] [2019-11-06 23:13:27,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 23:13:27,693 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643117627] [2019-11-06 23:13:27,693 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:27,693 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 23:13:27,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178586078] [2019-11-06 23:13:27,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:13:27,695 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:27,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:13:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:13:27,696 INFO L87 Difference]: Start difference. First operand 2188 states and 2930 transitions. Second operand 4 states. [2019-11-06 23:13:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:31,918 INFO L93 Difference]: Finished difference Result 4371 states and 5877 transitions. [2019-11-06 23:13:31,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 23:13:31,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-11-06 23:13:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:31,934 INFO L225 Difference]: With dead ends: 4371 [2019-11-06 23:13:31,934 INFO L226 Difference]: Without dead ends: 2194 [2019-11-06 23:13:31,945 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2019-11-06 23:13:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2192. [2019-11-06 23:13:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2019-11-06 23:13:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 2934 transitions. [2019-11-06 23:13:32,055 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 2934 transitions. Word has length 115 [2019-11-06 23:13:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:32,055 INFO L462 AbstractCegarLoop]: Abstraction has 2192 states and 2934 transitions. [2019-11-06 23:13:32,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:13:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 2934 transitions. [2019-11-06 23:13:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-06 23:13:32,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:32,062 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:32,063 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1988568606, now seen corresponding path program 1 times [2019-11-06 23:13:32,064 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:32,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028666019] [2019-11-06 23:13:32,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 23:13:32,252 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028666019] [2019-11-06 23:13:32,252 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:32,252 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 23:13:32,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363324076] [2019-11-06 23:13:32,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:13:32,254 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:32,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:13:32,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:13:32,254 INFO L87 Difference]: Start difference. First operand 2192 states and 2934 transitions. Second operand 4 states. [2019-11-06 23:13:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:32,364 INFO L93 Difference]: Finished difference Result 4415 states and 5945 transitions. [2019-11-06 23:13:32,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 23:13:32,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-11-06 23:13:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:32,379 INFO L225 Difference]: With dead ends: 4415 [2019-11-06 23:13:32,379 INFO L226 Difference]: Without dead ends: 2234 [2019-11-06 23:13:32,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 23:13:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2019-11-06 23:13:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2196. [2019-11-06 23:13:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-11-06 23:13:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2938 transitions. [2019-11-06 23:13:32,497 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2938 transitions. Word has length 164 [2019-11-06 23:13:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:32,498 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2938 transitions. [2019-11-06 23:13:32,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:13:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2938 transitions. [2019-11-06 23:13:32,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-06 23:13:32,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:32,503 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:32,503 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1683911757, now seen corresponding path program 1 times [2019-11-06 23:13:32,504 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:32,504 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991595602] [2019-11-06 23:13:32,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 23:13:32,765 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991595602] [2019-11-06 23:13:32,765 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:32,765 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:32,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748569409] [2019-11-06 23:13:32,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:32,767 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:32,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:32,767 INFO L87 Difference]: Start difference. First operand 2196 states and 2938 transitions. Second operand 3 states. [2019-11-06 23:13:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:32,948 INFO L93 Difference]: Finished difference Result 4393 states and 5907 transitions. [2019-11-06 23:13:32,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:32,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-06 23:13:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:32,982 INFO L225 Difference]: With dead ends: 4393 [2019-11-06 23:13:32,982 INFO L226 Difference]: Without dead ends: 2208 [2019-11-06 23:13:32,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2019-11-06 23:13:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2200. [2019-11-06 23:13:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2019-11-06 23:13:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2942 transitions. [2019-11-06 23:13:33,125 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2942 transitions. Word has length 175 [2019-11-06 23:13:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:33,126 INFO L462 AbstractCegarLoop]: Abstraction has 2200 states and 2942 transitions. [2019-11-06 23:13:33,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2942 transitions. [2019-11-06 23:13:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-06 23:13:33,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:33,134 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:33,135 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash -665722229, now seen corresponding path program 1 times [2019-11-06 23:13:33,136 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:33,136 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267059828] [2019-11-06 23:13:33,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-06 23:13:33,353 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267059828] [2019-11-06 23:13:33,355 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:33,355 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:13:33,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602240625] [2019-11-06 23:13:33,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:13:33,356 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:13:33,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:33,357 INFO L87 Difference]: Start difference. First operand 2200 states and 2942 transitions. Second operand 5 states. [2019-11-06 23:13:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:33,458 INFO L93 Difference]: Finished difference Result 4421 states and 5931 transitions. [2019-11-06 23:13:33,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 23:13:33,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-11-06 23:13:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:33,470 INFO L225 Difference]: With dead ends: 4421 [2019-11-06 23:13:33,471 INFO L226 Difference]: Without dead ends: 2232 [2019-11-06 23:13:33,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2019-11-06 23:13:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2212. [2019-11-06 23:13:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-11-06 23:13:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2960 transitions. [2019-11-06 23:13:33,568 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2960 transitions. Word has length 186 [2019-11-06 23:13:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:33,568 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 2960 transitions. [2019-11-06 23:13:33,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:13:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2960 transitions. [2019-11-06 23:13:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-06 23:13:33,575 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:33,575 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:33,576 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:33,576 INFO L82 PathProgramCache]: Analyzing trace with hash 882115653, now seen corresponding path program 1 times [2019-11-06 23:13:33,576 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:33,576 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006473358] [2019-11-06 23:13:33,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-06 23:13:33,859 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006473358] [2019-11-06 23:13:33,859 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:33,860 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:13:33,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030857879] [2019-11-06 23:13:33,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:13:33,860 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:33,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:13:33,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:33,861 INFO L87 Difference]: Start difference. First operand 2212 states and 2960 transitions. Second operand 5 states. [2019-11-06 23:13:33,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:33,980 INFO L93 Difference]: Finished difference Result 4533 states and 6105 transitions. [2019-11-06 23:13:33,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 23:13:33,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-11-06 23:13:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:33,994 INFO L225 Difference]: With dead ends: 4533 [2019-11-06 23:13:33,994 INFO L226 Difference]: Without dead ends: 2332 [2019-11-06 23:13:34,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 23:13:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2019-11-06 23:13:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2220. [2019-11-06 23:13:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2019-11-06 23:13:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2968 transitions. [2019-11-06 23:13:34,093 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2968 transitions. Word has length 186 [2019-11-06 23:13:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:34,093 INFO L462 AbstractCegarLoop]: Abstraction has 2220 states and 2968 transitions. [2019-11-06 23:13:34,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:13:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2968 transitions. [2019-11-06 23:13:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-11-06 23:13:34,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:34,100 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:34,101 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:34,101 INFO L82 PathProgramCache]: Analyzing trace with hash -642019834, now seen corresponding path program 1 times [2019-11-06 23:13:34,101 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:34,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409638105] [2019-11-06 23:13:34,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-06 23:13:34,430 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409638105] [2019-11-06 23:13:34,430 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:34,430 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:13:34,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528540389] [2019-11-06 23:13:34,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:13:34,431 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:13:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:34,432 INFO L87 Difference]: Start difference. First operand 2220 states and 2968 transitions. Second operand 5 states. [2019-11-06 23:13:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:34,557 INFO L93 Difference]: Finished difference Result 4459 states and 6115 transitions. [2019-11-06 23:13:34,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 23:13:34,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2019-11-06 23:13:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:34,578 INFO L225 Difference]: With dead ends: 4459 [2019-11-06 23:13:34,578 INFO L226 Difference]: Without dead ends: 2250 [2019-11-06 23:13:34,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:34,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2019-11-06 23:13:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2240. [2019-11-06 23:13:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2240 states. [2019-11-06 23:13:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3007 transitions. [2019-11-06 23:13:34,684 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3007 transitions. Word has length 248 [2019-11-06 23:13:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:34,687 INFO L462 AbstractCegarLoop]: Abstraction has 2240 states and 3007 transitions. [2019-11-06 23:13:34,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:13:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3007 transitions. [2019-11-06 23:13:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-11-06 23:13:34,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:34,698 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:34,698 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash 216925833, now seen corresponding path program 1 times [2019-11-06 23:13:34,698 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:34,699 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136366070] [2019-11-06 23:13:34,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2019-11-06 23:13:35,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136366070] [2019-11-06 23:13:35,132 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:35,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 23:13:35,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849879054] [2019-11-06 23:13:35,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 23:13:35,133 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:35,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 23:13:35,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:35,134 INFO L87 Difference]: Start difference. First operand 2240 states and 3007 transitions. Second operand 5 states. [2019-11-06 23:13:35,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:35,266 INFO L93 Difference]: Finished difference Result 4489 states and 6164 transitions. [2019-11-06 23:13:35,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 23:13:35,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 292 [2019-11-06 23:13:35,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:35,279 INFO L225 Difference]: With dead ends: 4489 [2019-11-06 23:13:35,279 INFO L226 Difference]: Without dead ends: 2260 [2019-11-06 23:13:35,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 23:13:35,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2019-11-06 23:13:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2250. [2019-11-06 23:13:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2019-11-06 23:13:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3017 transitions. [2019-11-06 23:13:35,387 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3017 transitions. Word has length 292 [2019-11-06 23:13:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:35,388 INFO L462 AbstractCegarLoop]: Abstraction has 2250 states and 3017 transitions. [2019-11-06 23:13:35,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 23:13:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3017 transitions. [2019-11-06 23:13:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-11-06 23:13:35,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:35,401 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:35,401 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:35,402 INFO L82 PathProgramCache]: Analyzing trace with hash 211763053, now seen corresponding path program 1 times [2019-11-06 23:13:35,402 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:35,402 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078713609] [2019-11-06 23:13:35,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-06 23:13:35,664 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078713609] [2019-11-06 23:13:35,664 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:35,664 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:35,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391684587] [2019-11-06 23:13:35,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:35,666 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:35,666 INFO L87 Difference]: Start difference. First operand 2250 states and 3017 transitions. Second operand 3 states. [2019-11-06 23:13:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:35,770 INFO L93 Difference]: Finished difference Result 4574 states and 6343 transitions. [2019-11-06 23:13:35,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:35,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2019-11-06 23:13:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:35,782 INFO L225 Difference]: With dead ends: 4574 [2019-11-06 23:13:35,782 INFO L226 Difference]: Without dead ends: 2335 [2019-11-06 23:13:35,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2019-11-06 23:13:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2305. [2019-11-06 23:13:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2019-11-06 23:13:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3102 transitions. [2019-11-06 23:13:35,887 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3102 transitions. Word has length 283 [2019-11-06 23:13:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:35,889 INFO L462 AbstractCegarLoop]: Abstraction has 2305 states and 3102 transitions. [2019-11-06 23:13:35,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3102 transitions. [2019-11-06 23:13:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-11-06 23:13:35,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:35,896 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:35,897 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1694640213, now seen corresponding path program 1 times [2019-11-06 23:13:35,897 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:35,897 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912930400] [2019-11-06 23:13:35,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-06 23:13:36,291 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912930400] [2019-11-06 23:13:36,291 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:13:36,292 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:13:36,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907352502] [2019-11-06 23:13:36,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:13:36,293 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:13:36,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:36,293 INFO L87 Difference]: Start difference. First operand 2305 states and 3102 transitions. Second operand 3 states. [2019-11-06 23:13:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:36,394 INFO L93 Difference]: Finished difference Result 4619 states and 6289 transitions. [2019-11-06 23:13:36,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:13:36,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283 [2019-11-06 23:13:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:36,405 INFO L225 Difference]: With dead ends: 4619 [2019-11-06 23:13:36,405 INFO L226 Difference]: Without dead ends: 2325 [2019-11-06 23:13:36,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:13:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2019-11-06 23:13:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2310. [2019-11-06 23:13:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2019-11-06 23:13:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3107 transitions. [2019-11-06 23:13:36,528 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3107 transitions. Word has length 283 [2019-11-06 23:13:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:36,529 INFO L462 AbstractCegarLoop]: Abstraction has 2310 states and 3107 transitions. [2019-11-06 23:13:36,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:13:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3107 transitions. [2019-11-06 23:13:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-11-06 23:13:36,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:36,546 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:36,547 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:13:36,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:13:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1885188867, now seen corresponding path program 1 times [2019-11-06 23:13:36,548 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:13:36,548 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787949560] [2019-11-06 23:13:36,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:13:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-11-06 23:13:36,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787949560] [2019-11-06 23:13:36,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877142430] [2019-11-06 23:13:36,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:13:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:13:37,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3525 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-06 23:13:37,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:13:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2019-11-06 23:13:38,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:13:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2019-11-06 23:13:39,362 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-06 23:13:39,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2019-11-06 23:13:39,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663619782] [2019-11-06 23:13:39,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 23:13:39,364 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:13:39,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 23:13:39,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-06 23:13:39,364 INFO L87 Difference]: Start difference. First operand 2310 states and 3107 transitions. Second operand 4 states. [2019-11-06 23:13:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:13:39,525 INFO L93 Difference]: Finished difference Result 4621 states and 6224 transitions. [2019-11-06 23:13:39,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 23:13:39,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 371 [2019-11-06 23:13:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:13:39,541 INFO L225 Difference]: With dead ends: 4621 [2019-11-06 23:13:39,541 INFO L226 Difference]: Without dead ends: 2322 [2019-11-06 23:13:39,556 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-06 23:13:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2019-11-06 23:13:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2322. [2019-11-06 23:13:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2019-11-06 23:13:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3122 transitions. [2019-11-06 23:13:39,672 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3122 transitions. Word has length 371 [2019-11-06 23:13:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:13:39,673 INFO L462 AbstractCegarLoop]: Abstraction has 2322 states and 3122 transitions. [2019-11-06 23:13:39,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 23:13:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3122 transitions. [2019-11-06 23:13:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2019-11-06 23:13:39,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:13:39,684 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]