java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 06:55:33,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 06:55:33,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 06:55:33,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 06:55:33,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 06:55:33,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 06:55:33,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 06:55:33,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 06:55:33,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 06:55:33,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 06:55:33,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 06:55:33,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 06:55:33,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 06:55:33,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 06:55:33,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 06:55:33,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 06:55:33,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 06:55:33,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 06:55:33,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 06:55:33,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 06:55:33,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 06:55:33,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 06:55:33,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 06:55:33,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 06:55:33,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 06:55:33,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 06:55:33,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 06:55:33,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 06:55:33,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 06:55:33,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 06:55:33,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 06:55:33,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 06:55:33,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 06:55:33,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 06:55:33,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 06:55:33,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 06:55:33,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 06:55:33,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 06:55:33,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 06:55:33,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 06:55:33,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 06:55:33,339 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 [2019-10-02 06:55:33,356 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 06:55:33,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 06:55:33,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 06:55:33,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 06:55:33,358 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 06:55:33,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 06:55:33,359 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 06:55:33,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 06:55:33,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 06:55:33,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 06:55:33,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 06:55:33,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 06:55:33,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 06:55:33,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 06:55:33,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 06:55:33,361 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 06:55:33,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 06:55:33,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 06:55:33,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 06:55:33,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 06:55:33,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 06:55:33,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 06:55:33,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 06:55:33,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 06:55:33,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 06:55:33,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 06:55:33,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 06:55:33,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 06:55:33,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 06:55:33,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 06:55:33,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 06:55:33,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 06:55:33,411 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 06:55:33,412 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 06:55:33,412 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-02 06:55:33,472 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec92e429/9f93c28c8abc49f386d2f62dfd2b40e7/FLAGd4a49512e [2019-10-02 06:55:34,271 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 06:55:34,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-02 06:55:34,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec92e429/9f93c28c8abc49f386d2f62dfd2b40e7/FLAGd4a49512e [2019-10-02 06:55:34,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec92e429/9f93c28c8abc49f386d2f62dfd2b40e7 [2019-10-02 06:55:34,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 06:55:34,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 06:55:34,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 06:55:34,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 06:55:34,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 06:55:34,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:55:34" (1/1) ... [2019-10-02 06:55:34,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230f3591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:34, skipping insertion in model container [2019-10-02 06:55:34,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:55:34" (1/1) ... [2019-10-02 06:55:34,838 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 06:55:34,967 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 06:55:36,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 06:55:36,634 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 06:55:36,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 06:55:37,276 INFO L192 MainTranslator]: Completed translation [2019-10-02 06:55:37,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37 WrapperNode [2019-10-02 06:55:37,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 06:55:37,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 06:55:37,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 06:55:37,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 06:55:37,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (1/1) ... [2019-10-02 06:55:37,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 06:55:37,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 06:55:37,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 06:55:37,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 06:55:37,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (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 [2019-10-02 06:55:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 06:55:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 06:55:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-02 06:55:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-02 06:55:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-02 06:55:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-02 06:55:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-02 06:55:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-02 06:55:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-02 06:55:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-02 06:55:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-02 06:55:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-02 06:55:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-02 06:55:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-02 06:55:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-02 06:55:37,658 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-02 06:55:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-02 06:55:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-02 06:55:37,661 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-02 06:55:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-02 06:55:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-02 06:55:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-02 06:55:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-02 06:55:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-02 06:55:37,663 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-02 06:55:37,664 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-10-02 06:55:37,665 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-10-02 06:55:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-10-02 06:55:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-10-02 06:55:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-10-02 06:55:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-10-02 06:55:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-10-02 06:55:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-10-02 06:55:37,667 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-10-02 06:55:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-10-02 06:55:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-10-02 06:55:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-10-02 06:55:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-10-02 06:55:37,668 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-10-02 06:55:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-10-02 06:55:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-10-02 06:55:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-10-02 06:55:37,669 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-10-02 06:55:37,670 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-10-02 06:55:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-10-02 06:55:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-10-02 06:55:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-10-02 06:55:37,671 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-10-02 06:55:37,672 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-10-02 06:55:37,672 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-10-02 06:55:37,673 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-10-02 06:55:37,673 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-10-02 06:55:37,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-02 06:55:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-10-02 06:55:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-10-02 06:55:37,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 06:55:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-02 06:55:37,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-02 06:55:37,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-02 06:55:37,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-02 06:55:37,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-02 06:55:37,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-10-02 06:55:37,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-10-02 06:55:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-10-02 06:55:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-10-02 06:55:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-10-02 06:55:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-02 06:55:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-10-02 06:55:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-02 06:55:37,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-02 06:55:37,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-10-02 06:55:37,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-10-02 06:55:37,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-10-02 06:55:37,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-10-02 06:55:37,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-10-02 06:55:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-10-02 06:55:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-02 06:55:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-02 06:55:37,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-02 06:55:37,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-02 06:55:37,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-02 06:55:37,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-02 06:55:37,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-02 06:55:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-02 06:55:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-02 06:55:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-02 06:55:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-02 06:55:37,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-02 06:55:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-02 06:55:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-02 06:55:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-02 06:55:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-02 06:55:37,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-02 06:55:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-02 06:55:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-02 06:55:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-02 06:55:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-02 06:55:37,691 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-02 06:55:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-02 06:55:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-02 06:55:37,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-02 06:55:37,693 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-02 06:55:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-02 06:55:37,694 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-02 06:55:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-10-02 06:55:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-10-02 06:55:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-10-02 06:55:37,698 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-10-02 06:55:37,699 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-10-02 06:55:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-10-02 06:55:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-10-02 06:55:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-10-02 06:55:37,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-02 06:55:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-02 06:55:37,701 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-10-02 06:55:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-10-02 06:55:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-02 06:55:37,702 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-10-02 06:55:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-02 06:55:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-02 06:55:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-02 06:55:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-02 06:55:37,704 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-02 06:55:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-02 06:55:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-10-02 06:55:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-02 06:55:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-10-02 06:55:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-02 06:55:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-02 06:55:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-02 06:55:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-02 06:55:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-02 06:55:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-02 06:55:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-02 06:55:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-02 06:55:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-02 06:55:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 06:55:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-02 06:55:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-02 06:55:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-02 06:55:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-02 06:55:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-02 06:55:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-02 06:55:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 06:55:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-02 06:55:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-02 06:55:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-02 06:55:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-02 06:55:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-02 06:55:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-02 06:55:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-02 06:55:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-02 06:55:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-02 06:55:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-02 06:55:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-02 06:55:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-02 06:55:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-02 06:55:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-02 06:55:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-02 06:55:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-02 06:55:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-02 06:55:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-02 06:55:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-02 06:55:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-02 06:55:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-02 06:55:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-02 06:55:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-02 06:55:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-02 06:55:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-02 06:55:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-02 06:55:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-02 06:55:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-02 06:55:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-02 06:55:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-10-02 06:55:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-02 06:55:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-10-02 06:55:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-02 06:55:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-02 06:55:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-10-02 06:55:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-02 06:55:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-02 06:55:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-02 06:55:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-02 06:55:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-02 06:55:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 06:55:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 06:55:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-10-02 06:55:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-02 06:55:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-02 06:55:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-02 06:55:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 06:55:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 06:55:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 06:55:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-02 06:55:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-02 06:55:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-02 06:55:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-10-02 06:55:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-02 06:55:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-02 06:55:37,741 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-10-02 06:55:37,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-02 06:55:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-10-02 06:55:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-10-02 06:55:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-10-02 06:55:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-02 06:55:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-02 06:55:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-10-02 06:55:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 06:55:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-10-02 06:55:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-10-02 06:55:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-10-02 06:55:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-10-02 06:55:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 06:55:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-10-02 06:55:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-02 06:55:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-10-02 06:55:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-02 06:55:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-10-02 06:55:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-10-02 06:55:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-10-02 06:55:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-10-02 06:55:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-02 06:55:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-10-02 06:55:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-10-02 06:55:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-10-02 06:55:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-10-02 06:55:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-10-02 06:55:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-10-02 06:55:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-10-02 06:55:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-10-02 06:55:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-10-02 06:55:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-10-02 06:55:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-10-02 06:55:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-10-02 06:55:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-10-02 06:55:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-10-02 06:55:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-10-02 06:55:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-10-02 06:55:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-10-02 06:55:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-10-02 06:55:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-10-02 06:55:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-02 06:55:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-02 06:55:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-02 06:55:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 06:55:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-02 06:55:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-02 06:55:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-02 06:55:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-02 06:55:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-02 06:55:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-02 06:55:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-02 06:55:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-02 06:55:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-02 06:55:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-02 06:55:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-02 06:55:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-02 06:55:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-02 06:55:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 06:55:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 06:55:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-02 06:55:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 06:55:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 06:55:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-02 06:55:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-02 06:55:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-02 06:55:37,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-02 06:55:38,891 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-02 06:55:40,888 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 06:55:40,888 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 06:55:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:55:40 BoogieIcfgContainer [2019-10-02 06:55:40,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 06:55:40,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 06:55:40,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 06:55:40,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 06:55:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 06:55:34" (1/3) ... [2019-10-02 06:55:40,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613716dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:55:40, skipping insertion in model container [2019-10-02 06:55:40,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:55:37" (2/3) ... [2019-10-02 06:55:40,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613716dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:55:40, skipping insertion in model container [2019-10-02 06:55:40,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:55:40" (3/3) ... [2019-10-02 06:55:40,902 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-02 06:55:40,915 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 06:55:40,926 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 06:55:40,946 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 06:55:40,996 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 06:55:40,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 06:55:40,997 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 06:55:40,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 06:55:40,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 06:55:40,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 06:55:40,998 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 06:55:40,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 06:55:40,998 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 06:55:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states. [2019-10-02 06:55:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-02 06:55:41,078 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:41,079 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 06:55:41,081 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash -663033153, now seen corresponding path program 1 times [2019-10-02 06:55:41,087 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:41,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:41,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:41,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:41,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-02 06:55:41,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:41,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:41,690 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:41,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:41,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:41,707 INFO L87 Difference]: Start difference. First operand 1061 states. Second operand 3 states. [2019-10-02 06:55:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:42,015 INFO L93 Difference]: Finished difference Result 2934 states and 3893 transitions. [2019-10-02 06:55:42,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:55:42,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-02 06:55:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:42,052 INFO L225 Difference]: With dead ends: 2934 [2019-10-02 06:55:42,052 INFO L226 Difference]: Without dead ends: 1910 [2019-10-02 06:55:42,069 INFO L640 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 [2019-10-02 06:55:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-02 06:55:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-02 06:55:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-02 06:55:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2458 transitions. [2019-10-02 06:55:42,281 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2458 transitions. Word has length 75 [2019-10-02 06:55:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:42,282 INFO L475 AbstractCegarLoop]: Abstraction has 1910 states and 2458 transitions. [2019-10-02 06:55:42,282 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:55:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2458 transitions. [2019-10-02 06:55:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-02 06:55:42,295 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:42,297 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 06:55:42,297 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:42,298 INFO L82 PathProgramCache]: Analyzing trace with hash -859275162, now seen corresponding path program 1 times [2019-10-02 06:55:42,299 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:42,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:42,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:42,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:42,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:42,423 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:55:42,424 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:55:42,424 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2019-10-02 06:55:42,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:43,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 06:55:43,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-02 06:55:43,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:43,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:55:43,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:55:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:55:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:55:43,186 INFO L87 Difference]: Start difference. First operand 1910 states and 2458 transitions. Second operand 5 states. [2019-10-02 06:55:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:46,202 INFO L93 Difference]: Finished difference Result 3796 states and 4888 transitions. [2019-10-02 06:55:46,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 06:55:46,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2019-10-02 06:55:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:46,216 INFO L225 Difference]: With dead ends: 3796 [2019-10-02 06:55:46,216 INFO L226 Difference]: Without dead ends: 1910 [2019-10-02 06:55:46,224 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 06:55:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-02 06:55:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-02 06:55:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-02 06:55:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2457 transitions. [2019-10-02 06:55:46,321 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2457 transitions. Word has length 93 [2019-10-02 06:55:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:46,322 INFO L475 AbstractCegarLoop]: Abstraction has 1910 states and 2457 transitions. [2019-10-02 06:55:46,322 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:55:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2457 transitions. [2019-10-02 06:55:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-02 06:55:46,328 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:46,328 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 06:55:46,329 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:46,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2063884836, now seen corresponding path program 1 times [2019-10-02 06:55:46,330 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:46,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:46,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:46,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:46,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:46,381 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:55:46,381 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:55:46,381 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:55:46,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:46,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 06:55:46,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:55:46,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:46,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 06:55:46,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 06:55:46,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 06:55:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 06:55:46,903 INFO L87 Difference]: Start difference. First operand 1910 states and 2457 transitions. Second operand 6 states. [2019-10-02 06:55:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:48,253 INFO L93 Difference]: Finished difference Result 5679 states and 7427 transitions. [2019-10-02 06:55:48,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 06:55:48,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-02 06:55:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:48,304 INFO L225 Difference]: With dead ends: 5679 [2019-10-02 06:55:48,305 INFO L226 Difference]: Without dead ends: 3744 [2019-10-02 06:55:48,317 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-02 06:55:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2019-10-02 06:55:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3736. [2019-10-02 06:55:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3736 states. [2019-10-02 06:55:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 4897 transitions. [2019-10-02 06:55:48,597 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 4897 transitions. Word has length 93 [2019-10-02 06:55:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:48,598 INFO L475 AbstractCegarLoop]: Abstraction has 3736 states and 4897 transitions. [2019-10-02 06:55:48,598 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 06:55:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 4897 transitions. [2019-10-02 06:55:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-02 06:55:48,610 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:48,610 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-02 06:55:48,610 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2021957923, now seen corresponding path program 1 times [2019-10-02 06:55:48,611 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:48,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:48,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:48,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:48,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:48,819 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-02 06:55:48,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 06:55:48,820 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 06:55:49,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:49,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:55:49,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-02 06:55:49,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:49,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:49,323 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:49,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:49,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:49,324 INFO L87 Difference]: Start difference. First operand 3736 states and 4897 transitions. Second operand 3 states. [2019-10-02 06:55:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:49,626 INFO L93 Difference]: Finished difference Result 10536 states and 13722 transitions. [2019-10-02 06:55:49,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:55:49,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-10-02 06:55:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:49,681 INFO L225 Difference]: With dead ends: 10536 [2019-10-02 06:55:49,681 INFO L226 Difference]: Without dead ends: 6824 [2019-10-02 06:55:49,708 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2019-10-02 06:55:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6812. [2019-10-02 06:55:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6812 states. [2019-10-02 06:55:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 8839 transitions. [2019-10-02 06:55:50,889 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 8839 transitions. Word has length 131 [2019-10-02 06:55:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:50,889 INFO L475 AbstractCegarLoop]: Abstraction has 6812 states and 8839 transitions. [2019-10-02 06:55:50,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:55:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 8839 transitions. [2019-10-02 06:55:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-02 06:55:50,903 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:50,903 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-02 06:55:50,904 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash -760534101, now seen corresponding path program 1 times [2019-10-02 06:55:50,904 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:50,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:50,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:50,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:51,093 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-02 06:55:51,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 06:55:51,093 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 06:55:51,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:51,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:55:51,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:55:51,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:51,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:51,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:51,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:51,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:51,593 INFO L87 Difference]: Start difference. First operand 6812 states and 8839 transitions. Second operand 3 states. [2019-10-02 06:55:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:52,047 INFO L93 Difference]: Finished difference Result 18366 states and 23757 transitions. [2019-10-02 06:55:52,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:55:52,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-02 06:55:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:52,138 INFO L225 Difference]: With dead ends: 18366 [2019-10-02 06:55:52,139 INFO L226 Difference]: Without dead ends: 11578 [2019-10-02 06:55:52,175 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2019-10-02 06:55:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 11488. [2019-10-02 06:55:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11488 states. [2019-10-02 06:55:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11488 states to 11488 states and 14840 transitions. [2019-10-02 06:55:52,828 INFO L78 Accepts]: Start accepts. Automaton has 11488 states and 14840 transitions. Word has length 150 [2019-10-02 06:55:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:52,829 INFO L475 AbstractCegarLoop]: Abstraction has 11488 states and 14840 transitions. [2019-10-02 06:55:52,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:55:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11488 states and 14840 transitions. [2019-10-02 06:55:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-02 06:55:52,846 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:52,846 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2019-10-02 06:55:52,846 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:52,847 INFO L82 PathProgramCache]: Analyzing trace with hash 674163483, now seen corresponding path program 1 times [2019-10-02 06:55:52,847 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:52,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:52,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:52,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:52,991 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-02 06:55:52,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 06:55:52,991 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 06:55:53,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:53,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:55:53,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:55:53,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:53,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:53,578 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:53,580 INFO L87 Difference]: Start difference. First operand 11488 states and 14840 transitions. Second operand 3 states. [2019-10-02 06:55:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:54,210 INFO L93 Difference]: Finished difference Result 28474 states and 36651 transitions. [2019-10-02 06:55:54,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:55:54,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-02 06:55:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:54,303 INFO L225 Difference]: With dead ends: 28474 [2019-10-02 06:55:54,304 INFO L226 Difference]: Without dead ends: 17010 [2019-10-02 06:55:54,342 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17010 states. [2019-10-02 06:55:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17010 to 16994. [2019-10-02 06:55:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16994 states. [2019-10-02 06:55:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16994 states to 16994 states and 21809 transitions. [2019-10-02 06:55:55,009 INFO L78 Accepts]: Start accepts. Automaton has 16994 states and 21809 transitions. Word has length 171 [2019-10-02 06:55:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:55,010 INFO L475 AbstractCegarLoop]: Abstraction has 16994 states and 21809 transitions. [2019-10-02 06:55:55,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:55:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 16994 states and 21809 transitions. [2019-10-02 06:55:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-02 06:55:55,025 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:55,026 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-02 06:55:55,026 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2031721131, now seen corresponding path program 1 times [2019-10-02 06:55:55,027 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:55,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:55,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:55,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:55,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:55,073 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:55:55,073 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:55:55,073 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:55:55,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:55,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:55:55,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-02 06:55:55,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:55,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:55,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:55,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:55,609 INFO L87 Difference]: Start difference. First operand 16994 states and 21809 transitions. Second operand 3 states. [2019-10-02 06:55:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:55:56,629 INFO L93 Difference]: Finished difference Result 43652 states and 55997 transitions. [2019-10-02 06:55:56,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:55:56,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-02 06:55:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:55:56,785 INFO L225 Difference]: With dead ends: 43652 [2019-10-02 06:55:56,785 INFO L226 Difference]: Without dead ends: 26691 [2019-10-02 06:55:56,874 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26691 states. [2019-10-02 06:55:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26691 to 26679. [2019-10-02 06:55:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26679 states. [2019-10-02 06:55:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26679 states to 26679 states and 34007 transitions. [2019-10-02 06:55:59,035 INFO L78 Accepts]: Start accepts. Automaton has 26679 states and 34007 transitions. Word has length 179 [2019-10-02 06:55:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:55:59,036 INFO L475 AbstractCegarLoop]: Abstraction has 26679 states and 34007 transitions. [2019-10-02 06:55:59,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:55:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 26679 states and 34007 transitions. [2019-10-02 06:55:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-02 06:55:59,052 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:55:59,052 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-02 06:55:59,052 INFO L418 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:55:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:55:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -501094365, now seen corresponding path program 1 times [2019-10-02 06:55:59,053 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:55:59,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:55:59,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:59,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:59,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:55:59,095 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:55:59,095 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:55:59,095 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:55:59,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:55:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:55:59,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:55:59,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:55:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:55:59,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:55:59,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:55:59,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:55:59,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:55:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:55:59,593 INFO L87 Difference]: Start difference. First operand 26679 states and 34007 transitions. Second operand 3 states. [2019-10-02 06:56:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:00,118 INFO L93 Difference]: Finished difference Result 40392 states and 52173 transitions. [2019-10-02 06:56:00,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:56:00,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-02 06:56:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:00,252 INFO L225 Difference]: With dead ends: 40392 [2019-10-02 06:56:00,252 INFO L226 Difference]: Without dead ends: 26767 [2019-10-02 06:56:00,298 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26767 states. [2019-10-02 06:56:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26767 to 26767. [2019-10-02 06:56:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26767 states. [2019-10-02 06:56:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26767 states to 26767 states and 34115 transitions. [2019-10-02 06:56:01,484 INFO L78 Accepts]: Start accepts. Automaton has 26767 states and 34115 transitions. Word has length 179 [2019-10-02 06:56:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:01,485 INFO L475 AbstractCegarLoop]: Abstraction has 26767 states and 34115 transitions. [2019-10-02 06:56:01,485 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:56:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 26767 states and 34115 transitions. [2019-10-02 06:56:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-02 06:56:01,506 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:01,506 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-02 06:56:01,506 INFO L418 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:01,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1788589124, now seen corresponding path program 1 times [2019-10-02 06:56:01,507 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:01,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:01,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:01,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:01,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:01,568 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:01,568 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:01,568 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:01,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:02,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 06:56:02,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-02 06:56:02,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:02,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:56:02,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:56:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:56:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:02,094 INFO L87 Difference]: Start difference. First operand 26767 states and 34115 transitions. Second operand 5 states. [2019-10-02 06:56:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:02,908 INFO L93 Difference]: Finished difference Result 53632 states and 68358 transitions. [2019-10-02 06:56:02,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 06:56:02,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-10-02 06:56:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:03,353 INFO L225 Difference]: With dead ends: 53632 [2019-10-02 06:56:03,353 INFO L226 Difference]: Without dead ends: 26838 [2019-10-02 06:56:03,411 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26838 states. [2019-10-02 06:56:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26838 to 26794. [2019-10-02 06:56:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26794 states. [2019-10-02 06:56:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26794 states to 26794 states and 34130 transitions. [2019-10-02 06:56:04,244 INFO L78 Accepts]: Start accepts. Automaton has 26794 states and 34130 transitions. Word has length 181 [2019-10-02 06:56:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:04,245 INFO L475 AbstractCegarLoop]: Abstraction has 26794 states and 34130 transitions. [2019-10-02 06:56:04,245 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:56:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 26794 states and 34130 transitions. [2019-10-02 06:56:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-02 06:56:04,260 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:04,260 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2019-10-02 06:56:04,260 INFO L418 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:04,261 INFO L82 PathProgramCache]: Analyzing trace with hash -202239127, now seen corresponding path program 1 times [2019-10-02 06:56:04,261 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:04,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:04,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:04,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:04,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:04,300 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:04,301 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:04,301 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:04,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:04,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-02 06:56:04,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:56:04,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:04,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 06:56:04,900 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 06:56:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 06:56:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 06:56:04,902 INFO L87 Difference]: Start difference. First operand 26794 states and 34130 transitions. Second operand 6 states. [2019-10-02 06:56:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:11,905 INFO L93 Difference]: Finished difference Result 56183 states and 72524 transitions. [2019-10-02 06:56:11,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 06:56:11,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2019-10-02 06:56:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:12,057 INFO L225 Difference]: With dead ends: 56183 [2019-10-02 06:56:12,057 INFO L226 Difference]: Without dead ends: 29422 [2019-10-02 06:56:12,136 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 06:56:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29422 states. [2019-10-02 06:56:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29422 to 28280. [2019-10-02 06:56:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28280 states. [2019-10-02 06:56:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28280 states to 28280 states and 35916 transitions. [2019-10-02 06:56:14,362 INFO L78 Accepts]: Start accepts. Automaton has 28280 states and 35916 transitions. Word has length 186 [2019-10-02 06:56:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:14,363 INFO L475 AbstractCegarLoop]: Abstraction has 28280 states and 35916 transitions. [2019-10-02 06:56:14,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 06:56:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 28280 states and 35916 transitions. [2019-10-02 06:56:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-02 06:56:14,376 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:14,376 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2019-10-02 06:56:14,377 INFO L418 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash -384732731, now seen corresponding path program 1 times [2019-10-02 06:56:14,377 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:14,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:14,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:14,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:14,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:14,431 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:14,432 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:14,432 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:14,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:14,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-02 06:56:14,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-02 06:56:14,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:14,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:56:14,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:56:14,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:56:14,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:14,988 INFO L87 Difference]: Start difference. First operand 28280 states and 35916 transitions. Second operand 5 states. [2019-10-02 06:56:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:18,234 INFO L93 Difference]: Finished difference Result 28580 states and 36311 transitions. [2019-10-02 06:56:18,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 06:56:18,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-10-02 06:56:18,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:18,351 INFO L225 Difference]: With dead ends: 28580 [2019-10-02 06:56:18,352 INFO L226 Difference]: Without dead ends: 28436 [2019-10-02 06:56:18,366 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 06:56:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28436 states. [2019-10-02 06:56:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28436 to 28292. [2019-10-02 06:56:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28292 states. [2019-10-02 06:56:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28292 states to 28292 states and 35928 transitions. [2019-10-02 06:56:19,407 INFO L78 Accepts]: Start accepts. Automaton has 28292 states and 35928 transitions. Word has length 195 [2019-10-02 06:56:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:19,411 INFO L475 AbstractCegarLoop]: Abstraction has 28292 states and 35928 transitions. [2019-10-02 06:56:19,411 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:56:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 28292 states and 35928 transitions. [2019-10-02 06:56:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-02 06:56:19,431 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:19,432 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2019-10-02 06:56:19,432 INFO L418 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:19,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:19,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1437523860, now seen corresponding path program 1 times [2019-10-02 06:56:19,433 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:19,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:19,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:19,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:19,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:19,487 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:19,487 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:19,487 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:19,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:19,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 06:56:19,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-02 06:56:20,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:56:20,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-02 06:56:20,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 06:56:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 06:56:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 06:56:20,056 INFO L87 Difference]: Start difference. First operand 28292 states and 35928 transitions. Second operand 6 states. [2019-10-02 06:56:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:24,718 INFO L93 Difference]: Finished difference Result 28736 states and 36557 transitions. [2019-10-02 06:56:24,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 06:56:24,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2019-10-02 06:56:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:24,842 INFO L225 Difference]: With dead ends: 28736 [2019-10-02 06:56:24,843 INFO L226 Difference]: Without dead ends: 28592 [2019-10-02 06:56:24,863 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-02 06:56:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28592 states. [2019-10-02 06:56:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28592 to 28448. [2019-10-02 06:56:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28448 states. [2019-10-02 06:56:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28448 states to 28448 states and 36168 transitions. [2019-10-02 06:56:26,202 INFO L78 Accepts]: Start accepts. Automaton has 28448 states and 36168 transitions. Word has length 194 [2019-10-02 06:56:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:26,203 INFO L475 AbstractCegarLoop]: Abstraction has 28448 states and 36168 transitions. [2019-10-02 06:56:26,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 06:56:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28448 states and 36168 transitions. [2019-10-02 06:56:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-02 06:56:26,226 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:26,227 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2019-10-02 06:56:26,227 INFO L418 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:26,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1166069643, now seen corresponding path program 1 times [2019-10-02 06:56:26,228 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:26,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:26,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:26,288 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:26,289 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:26,289 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:26,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:26,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-02 06:56:26,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-02 06:56:27,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:56:27,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-02 06:56:27,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 06:56:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 06:56:27,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-02 06:56:27,039 INFO L87 Difference]: Start difference. First operand 28448 states and 36168 transitions. Second operand 7 states. [2019-10-02 06:56:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:31,372 INFO L93 Difference]: Finished difference Result 28892 states and 36797 transitions. [2019-10-02 06:56:31,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 06:56:31,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-02 06:56:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:31,480 INFO L225 Difference]: With dead ends: 28892 [2019-10-02 06:56:31,480 INFO L226 Difference]: Without dead ends: 28748 [2019-10-02 06:56:31,497 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-02 06:56:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28748 states. [2019-10-02 06:56:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28748 to 28604. [2019-10-02 06:56:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28604 states. [2019-10-02 06:56:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28604 states to 28604 states and 36408 transitions. [2019-10-02 06:56:32,306 INFO L78 Accepts]: Start accepts. Automaton has 28604 states and 36408 transitions. Word has length 203 [2019-10-02 06:56:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:32,306 INFO L475 AbstractCegarLoop]: Abstraction has 28604 states and 36408 transitions. [2019-10-02 06:56:32,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 06:56:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 28604 states and 36408 transitions. [2019-10-02 06:56:32,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-02 06:56:32,320 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:32,321 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 06:56:32,321 INFO L418 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:32,321 INFO L82 PathProgramCache]: Analyzing trace with hash -227250739, now seen corresponding path program 2 times [2019-10-02 06:56:32,321 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:32,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:32,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:32,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:32,358 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:32,358 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:32,358 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:32,564 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:56:32,771 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-02 06:56:32,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:56:32,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-02 06:56:32,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:56:32,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:32,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:56:32,881 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:56:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:56:32,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:32,882 INFO L87 Difference]: Start difference. First operand 28604 states and 36408 transitions. Second operand 5 states. [2019-10-02 06:56:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:33,573 INFO L93 Difference]: Finished difference Result 57417 states and 73856 transitions. [2019-10-02 06:56:33,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 06:56:33,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2019-10-02 06:56:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:33,685 INFO L225 Difference]: With dead ends: 57417 [2019-10-02 06:56:33,685 INFO L226 Difference]: Without dead ends: 28846 [2019-10-02 06:56:33,762 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28846 states. [2019-10-02 06:56:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28846 to 28764. [2019-10-02 06:56:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28764 states. [2019-10-02 06:56:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28764 states to 28764 states and 36600 transitions. [2019-10-02 06:56:34,556 INFO L78 Accepts]: Start accepts. Automaton has 28764 states and 36600 transitions. Word has length 207 [2019-10-02 06:56:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:34,557 INFO L475 AbstractCegarLoop]: Abstraction has 28764 states and 36600 transitions. [2019-10-02 06:56:34,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:56:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 28764 states and 36600 transitions. [2019-10-02 06:56:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-02 06:56:34,575 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:34,575 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 06:56:34,575 INFO L418 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:34,576 INFO L82 PathProgramCache]: Analyzing trace with hash -721022434, now seen corresponding path program 1 times [2019-10-02 06:56:34,576 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:34,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:34,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:34,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:56:34,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:34,615 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:34,615 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:34,616 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:34,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:35,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 06:56:35,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-02 06:56:35,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:56:35,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-02 06:56:35,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 06:56:35,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 06:56:35,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-02 06:56:35,211 INFO L87 Difference]: Start difference. First operand 28764 states and 36600 transitions. Second operand 8 states. [2019-10-02 06:56:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:41,222 INFO L93 Difference]: Finished difference Result 29208 states and 37229 transitions. [2019-10-02 06:56:41,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-02 06:56:41,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2019-10-02 06:56:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:41,299 INFO L225 Difference]: With dead ends: 29208 [2019-10-02 06:56:41,300 INFO L226 Difference]: Without dead ends: 29064 [2019-10-02 06:56:41,312 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-10-02 06:56:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29064 states. [2019-10-02 06:56:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29064 to 28920. [2019-10-02 06:56:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28920 states. [2019-10-02 06:56:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28920 states to 28920 states and 36840 transitions. [2019-10-02 06:56:42,037 INFO L78 Accepts]: Start accepts. Automaton has 28920 states and 36840 transitions. Word has length 212 [2019-10-02 06:56:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:42,038 INFO L475 AbstractCegarLoop]: Abstraction has 28920 states and 36840 transitions. [2019-10-02 06:56:42,038 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 06:56:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 28920 states and 36840 transitions. [2019-10-02 06:56:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-02 06:56:42,053 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:42,053 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 06:56:42,053 INFO L418 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1438329029, now seen corresponding path program 1 times [2019-10-02 06:56:42,054 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:42,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:42,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:42,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:42,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:42,094 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:42,094 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:42,094 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:42,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:42,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 06:56:42,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:56:42,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:42,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:56:42,663 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:56:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:56:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:42,664 INFO L87 Difference]: Start difference. First operand 28920 states and 36840 transitions. Second operand 3 states. [2019-10-02 06:56:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:43,098 INFO L93 Difference]: Finished difference Result 43507 states and 55534 transitions. [2019-10-02 06:56:43,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:56:43,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2019-10-02 06:56:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:43,144 INFO L225 Difference]: With dead ends: 43507 [2019-10-02 06:56:43,144 INFO L226 Difference]: Without dead ends: 14247 [2019-10-02 06:56:43,194 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2019-10-02 06:56:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 14247. [2019-10-02 06:56:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14247 states. [2019-10-02 06:56:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 18217 transitions. [2019-10-02 06:56:43,954 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 18217 transitions. Word has length 218 [2019-10-02 06:56:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:43,955 INFO L475 AbstractCegarLoop]: Abstraction has 14247 states and 18217 transitions. [2019-10-02 06:56:43,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:56:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 18217 transitions. [2019-10-02 06:56:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-02 06:56:43,963 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:43,963 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 4, 3, 3, 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] [2019-10-02 06:56:43,963 INFO L418 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:43,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:43,964 INFO L82 PathProgramCache]: Analyzing trace with hash -974105866, now seen corresponding path program 2 times [2019-10-02 06:56:43,964 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:43,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:43,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:43,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:43,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:44,002 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:44,003 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:44,003 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:44,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:56:44,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-02 06:56:44,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:56:44,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-02 06:56:44,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2019-10-02 06:56:44,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:44,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-02 06:56:44,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 06:56:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 06:56:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-02 06:56:44,594 INFO L87 Difference]: Start difference. First operand 14247 states and 18217 transitions. Second operand 11 states. [2019-10-02 06:56:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:44,967 INFO L93 Difference]: Finished difference Result 28653 states and 36902 transitions. [2019-10-02 06:56:44,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 06:56:44,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2019-10-02 06:56:44,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:45,005 INFO L225 Difference]: With dead ends: 28653 [2019-10-02 06:56:45,005 INFO L226 Difference]: Without dead ends: 14509 [2019-10-02 06:56:45,030 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-02 06:56:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14509 states. [2019-10-02 06:56:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14509 to 14359. [2019-10-02 06:56:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14359 states. [2019-10-02 06:56:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14359 states to 14359 states and 18325 transitions. [2019-10-02 06:56:45,380 INFO L78 Accepts]: Start accepts. Automaton has 14359 states and 18325 transitions. Word has length 216 [2019-10-02 06:56:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:45,380 INFO L475 AbstractCegarLoop]: Abstraction has 14359 states and 18325 transitions. [2019-10-02 06:56:45,380 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 06:56:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14359 states and 18325 transitions. [2019-10-02 06:56:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-02 06:56:45,388 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:45,389 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 4, 3, 3, 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] [2019-10-02 06:56:45,389 INFO L418 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1260834285, now seen corresponding path program 1 times [2019-10-02 06:56:45,389 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:45,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:45,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:45,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:56:45,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:45,426 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:45,426 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:45,426 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:45,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:45,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-02 06:56:45,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-02 06:56:46,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:56:46,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-10-02 06:56:46,069 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 06:56:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 06:56:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-02 06:56:46,070 INFO L87 Difference]: Start difference. First operand 14359 states and 18325 transitions. Second operand 9 states. [2019-10-02 06:56:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:50,126 INFO L93 Difference]: Finished difference Result 14803 states and 18954 transitions. [2019-10-02 06:56:50,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 06:56:50,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2019-10-02 06:56:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:50,160 INFO L225 Difference]: With dead ends: 14803 [2019-10-02 06:56:50,161 INFO L226 Difference]: Without dead ends: 14659 [2019-10-02 06:56:50,168 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2019-10-02 06:56:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14659 states. [2019-10-02 06:56:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 14515. [2019-10-02 06:56:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14515 states. [2019-10-02 06:56:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14515 states to 14515 states and 18565 transitions. [2019-10-02 06:56:51,309 INFO L78 Accepts]: Start accepts. Automaton has 14515 states and 18565 transitions. Word has length 211 [2019-10-02 06:56:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:51,309 INFO L475 AbstractCegarLoop]: Abstraction has 14515 states and 18565 transitions. [2019-10-02 06:56:51,310 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 06:56:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 14515 states and 18565 transitions. [2019-10-02 06:56:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-02 06:56:51,318 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:51,319 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 3, 3, 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] [2019-10-02 06:56:51,319 INFO L418 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1184395371, now seen corresponding path program 2 times [2019-10-02 06:56:51,319 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:51,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:51,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:51,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:51,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:51,354 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:51,355 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:51,355 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:51,560 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:56:51,820 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-02 06:56:51,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:56:51,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 48 conjunts are in the unsatisfiable core [2019-10-02 06:56:51,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-10-02 06:56:51,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:51,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-02 06:56:51,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 06:56:51,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 06:56:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-02 06:56:51,993 INFO L87 Difference]: Start difference. First operand 14515 states and 18565 transitions. Second operand 11 states. [2019-10-02 06:56:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:52,383 INFO L93 Difference]: Finished difference Result 29109 states and 37338 transitions. [2019-10-02 06:56:52,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 06:56:52,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 215 [2019-10-02 06:56:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:52,421 INFO L225 Difference]: With dead ends: 29109 [2019-10-02 06:56:52,421 INFO L226 Difference]: Without dead ends: 14697 [2019-10-02 06:56:52,445 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-02 06:56:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14697 states. [2019-10-02 06:56:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14697 to 14547. [2019-10-02 06:56:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14547 states. [2019-10-02 06:56:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14547 states to 14547 states and 18589 transitions. [2019-10-02 06:56:52,773 INFO L78 Accepts]: Start accepts. Automaton has 14547 states and 18589 transitions. Word has length 215 [2019-10-02 06:56:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:52,774 INFO L475 AbstractCegarLoop]: Abstraction has 14547 states and 18589 transitions. [2019-10-02 06:56:52,774 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 06:56:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14547 states and 18589 transitions. [2019-10-02 06:56:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-02 06:56:52,786 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:52,786 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 3, 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] [2019-10-02 06:56:52,787 INFO L418 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1461155747, now seen corresponding path program 1 times [2019-10-02 06:56:52,787 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:52,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:52,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:52,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:56:52,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:52,824 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:52,825 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:52,825 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:53,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:53,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 06:56:53,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-10-02 06:56:53,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:53,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:56:53,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:56:53,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:56:53,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:53,347 INFO L87 Difference]: Start difference. First operand 14547 states and 18589 transitions. Second operand 3 states. [2019-10-02 06:56:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:53,761 INFO L93 Difference]: Finished difference Result 34970 states and 44584 transitions. [2019-10-02 06:56:53,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:56:53,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2019-10-02 06:56:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:53,816 INFO L225 Difference]: With dead ends: 34970 [2019-10-02 06:56:53,816 INFO L226 Difference]: Without dead ends: 20526 [2019-10-02 06:56:53,843 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20526 states. [2019-10-02 06:56:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20526 to 20431. [2019-10-02 06:56:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20431 states. [2019-10-02 06:56:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20431 states to 20431 states and 25927 transitions. [2019-10-02 06:56:54,705 INFO L78 Accepts]: Start accepts. Automaton has 20431 states and 25927 transitions. Word has length 249 [2019-10-02 06:56:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:54,706 INFO L475 AbstractCegarLoop]: Abstraction has 20431 states and 25927 transitions. [2019-10-02 06:56:54,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:56:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20431 states and 25927 transitions. [2019-10-02 06:56:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-10-02 06:56:54,728 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:54,728 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 4, 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] [2019-10-02 06:56:54,729 INFO L418 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1084455448, now seen corresponding path program 1 times [2019-10-02 06:56:54,729 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:54,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:54,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:54,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:54,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:54,766 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:54,766 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:54,766 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:54,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:55,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 06:56:55,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-02 06:56:55,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:55,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:56:55,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:56:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:56:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:55,358 INFO L87 Difference]: Start difference. First operand 20431 states and 25927 transitions. Second operand 5 states. [2019-10-02 06:56:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:55,989 INFO L93 Difference]: Finished difference Result 52622 states and 66580 transitions. [2019-10-02 06:56:55,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 06:56:55,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2019-10-02 06:56:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:56,069 INFO L225 Difference]: With dead ends: 52622 [2019-10-02 06:56:56,070 INFO L226 Difference]: Without dead ends: 32294 [2019-10-02 06:56:56,110 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-02 06:56:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32294 states. [2019-10-02 06:56:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32294 to 29961. [2019-10-02 06:56:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29961 states. [2019-10-02 06:56:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29961 states to 29961 states and 37813 transitions. [2019-10-02 06:56:56,847 INFO L78 Accepts]: Start accepts. Automaton has 29961 states and 37813 transitions. Word has length 266 [2019-10-02 06:56:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:56,847 INFO L475 AbstractCegarLoop]: Abstraction has 29961 states and 37813 transitions. [2019-10-02 06:56:56,847 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:56:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 29961 states and 37813 transitions. [2019-10-02 06:56:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-10-02 06:56:56,872 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:56,872 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 4, 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] [2019-10-02 06:56:56,872 INFO L418 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:56,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:56,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1188436899, now seen corresponding path program 1 times [2019-10-02 06:56:56,873 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:56,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:56,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:56,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:56,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:56,907 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:56,907 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:56,907 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:57,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:57,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 06:56:57,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-02 06:56:57,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:57,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 06:56:57,486 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 06:56:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 06:56:57,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:57,486 INFO L87 Difference]: Start difference. First operand 29961 states and 37813 transitions. Second operand 3 states. [2019-10-02 06:56:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:56:58,382 INFO L93 Difference]: Finished difference Result 59839 states and 75564 transitions. [2019-10-02 06:56:58,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 06:56:58,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2019-10-02 06:56:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:56:58,457 INFO L225 Difference]: With dead ends: 59839 [2019-10-02 06:56:58,457 INFO L226 Difference]: Without dead ends: 29981 [2019-10-02 06:56:58,499 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 06:56:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29981 states. [2019-10-02 06:56:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29981 to 29981. [2019-10-02 06:56:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29981 states. [2019-10-02 06:56:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29981 states to 29981 states and 37833 transitions. [2019-10-02 06:56:59,206 INFO L78 Accepts]: Start accepts. Automaton has 29981 states and 37833 transitions. Word has length 268 [2019-10-02 06:56:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:56:59,206 INFO L475 AbstractCegarLoop]: Abstraction has 29981 states and 37833 transitions. [2019-10-02 06:56:59,206 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 06:56:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 29981 states and 37833 transitions. [2019-10-02 06:56:59,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-10-02 06:56:59,232 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:56:59,232 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 4, 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] [2019-10-02 06:56:59,232 INFO L418 AbstractCegarLoop]: === Iteration 23 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:56:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:56:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1599047265, now seen corresponding path program 1 times [2019-10-02 06:56:59,233 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:56:59,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:56:59,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:59,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:59,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:56:59,268 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:56:59,268 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:56:59,268 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:56:59,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:56:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:56:59,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-02 06:56:59,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:56:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-02 06:56:59,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:56:59,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 06:56:59,850 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 06:56:59,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 06:56:59,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:56:59,850 INFO L87 Difference]: Start difference. First operand 29981 states and 37833 transitions. Second operand 5 states. [2019-10-02 06:57:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:00,682 INFO L93 Difference]: Finished difference Result 71786 states and 90488 transitions. [2019-10-02 06:57:00,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 06:57:00,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2019-10-02 06:57:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:00,799 INFO L225 Difference]: With dead ends: 71786 [2019-10-02 06:57:00,799 INFO L226 Difference]: Without dead ends: 41908 [2019-10-02 06:57:00,851 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-02 06:57:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41908 states. [2019-10-02 06:57:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41908 to 30021. [2019-10-02 06:57:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30021 states. [2019-10-02 06:57:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 37893 transitions. [2019-10-02 06:57:02,108 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 37893 transitions. Word has length 268 [2019-10-02 06:57:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:02,108 INFO L475 AbstractCegarLoop]: Abstraction has 30021 states and 37893 transitions. [2019-10-02 06:57:02,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 06:57:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 37893 transitions. [2019-10-02 06:57:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-02 06:57:02,140 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:02,140 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 3, 3, 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] [2019-10-02 06:57:02,140 INFO L418 AbstractCegarLoop]: === Iteration 24 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -683528439, now seen corresponding path program 1 times [2019-10-02 06:57:02,141 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:02,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:02,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:02,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:02,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:02,177 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:02,177 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:02,177 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:02,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:57:02,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2154 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-02 06:57:02,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 12 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-02 06:57:02,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:02,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-02 06:57:02,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 06:57:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 06:57:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 06:57:02,792 INFO L87 Difference]: Start difference. First operand 30021 states and 37893 transitions. Second operand 8 states. [2019-10-02 06:57:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:12,341 INFO L93 Difference]: Finished difference Result 71755 states and 92938 transitions. [2019-10-02 06:57:12,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-02 06:57:12,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2019-10-02 06:57:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:12,557 INFO L225 Difference]: With dead ends: 71755 [2019-10-02 06:57:12,558 INFO L226 Difference]: Without dead ends: 54576 [2019-10-02 06:57:12,607 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2019-10-02 06:57:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54576 states. [2019-10-02 06:57:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54576 to 51551. [2019-10-02 06:57:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51551 states. [2019-10-02 06:57:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51551 states to 51551 states and 66889 transitions. [2019-10-02 06:57:14,103 INFO L78 Accepts]: Start accepts. Automaton has 51551 states and 66889 transitions. Word has length 258 [2019-10-02 06:57:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:14,104 INFO L475 AbstractCegarLoop]: Abstraction has 51551 states and 66889 transitions. [2019-10-02 06:57:14,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 06:57:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 51551 states and 66889 transitions. [2019-10-02 06:57:14,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-02 06:57:14,160 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:14,161 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 3, 3, 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] [2019-10-02 06:57:14,161 INFO L418 AbstractCegarLoop]: === Iteration 25 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:14,161 INFO L82 PathProgramCache]: Analyzing trace with hash -665992632, now seen corresponding path program 1 times [2019-10-02 06:57:14,161 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:14,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:14,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:14,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:14,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:14,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:14,198 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:14,198 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:14,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:57:14,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 06:57:14,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-10-02 06:57:14,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:57:14,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 06:57:14,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 06:57:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 06:57:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 06:57:14,743 INFO L87 Difference]: Start difference. First operand 51551 states and 66889 transitions. Second operand 4 states. [2019-10-02 06:57:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:16,209 INFO L93 Difference]: Finished difference Result 89269 states and 118194 transitions. [2019-10-02 06:57:16,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 06:57:16,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 260 [2019-10-02 06:57:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:16,441 INFO L225 Difference]: With dead ends: 89269 [2019-10-02 06:57:16,441 INFO L226 Difference]: Without dead ends: 51553 [2019-10-02 06:57:16,569 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 06:57:16,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51553 states. [2019-10-02 06:57:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51553 to 51516. [2019-10-02 06:57:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51516 states. [2019-10-02 06:57:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51516 states to 51516 states and 66795 transitions. [2019-10-02 06:57:18,352 INFO L78 Accepts]: Start accepts. Automaton has 51516 states and 66795 transitions. Word has length 260 [2019-10-02 06:57:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:18,353 INFO L475 AbstractCegarLoop]: Abstraction has 51516 states and 66795 transitions. [2019-10-02 06:57:18,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 06:57:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 51516 states and 66795 transitions. [2019-10-02 06:57:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-02 06:57:18,393 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:18,394 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 5, 5, 3, 3, 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] [2019-10-02 06:57:18,394 INFO L418 AbstractCegarLoop]: === Iteration 26 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:18,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1720264498, now seen corresponding path program 1 times [2019-10-02 06:57:18,394 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:18,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:18,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:18,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:18,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:18,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:18,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:18,428 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:18,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:57:19,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 06:57:19,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:57:21,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:21,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-10-02 06:57:21,127 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 06:57:21,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 06:57:21,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-10-02 06:57:21,128 INFO L87 Difference]: Start difference. First operand 51516 states and 66795 transitions. Second operand 10 states. [2019-10-02 06:57:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:27,709 INFO L93 Difference]: Finished difference Result 53328 states and 69381 transitions. [2019-10-02 06:57:27,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-02 06:57:27,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 260 [2019-10-02 06:57:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:27,871 INFO L225 Difference]: With dead ends: 53328 [2019-10-02 06:57:27,872 INFO L226 Difference]: Without dead ends: 52766 [2019-10-02 06:57:27,899 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2019-10-02 06:57:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52766 states. [2019-10-02 06:57:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52766 to 52166. [2019-10-02 06:57:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52166 states. [2019-10-02 06:57:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52166 states to 52166 states and 67795 transitions. [2019-10-02 06:57:29,593 INFO L78 Accepts]: Start accepts. Automaton has 52166 states and 67795 transitions. Word has length 260 [2019-10-02 06:57:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:29,594 INFO L475 AbstractCegarLoop]: Abstraction has 52166 states and 67795 transitions. [2019-10-02 06:57:29,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 06:57:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 52166 states and 67795 transitions. [2019-10-02 06:57:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2019-10-02 06:57:29,626 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:29,626 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 6, 6, 3, 3, 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] [2019-10-02 06:57:29,626 INFO L418 AbstractCegarLoop]: === Iteration 27 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:29,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1036107354, now seen corresponding path program 2 times [2019-10-02 06:57:29,627 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:29,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:29,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:29,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:29,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:29,663 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:29,663 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:29,663 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:29,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:57:30,352 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 06:57:30,352 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:57:30,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-02 06:57:30,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:57:30,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:30,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-10-02 06:57:30,515 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 06:57:30,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 06:57:30,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2019-10-02 06:57:30,515 INFO L87 Difference]: Start difference. First operand 52166 states and 67795 transitions. Second operand 11 states. [2019-10-02 06:57:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:35,806 INFO L93 Difference]: Finished difference Result 53978 states and 70381 transitions. [2019-10-02 06:57:35,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 06:57:35,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 264 [2019-10-02 06:57:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:36,025 INFO L225 Difference]: With dead ends: 53978 [2019-10-02 06:57:36,026 INFO L226 Difference]: Without dead ends: 53416 [2019-10-02 06:57:36,054 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2019-10-02 06:57:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53416 states. [2019-10-02 06:57:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53416 to 52816. [2019-10-02 06:57:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52816 states. [2019-10-02 06:57:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52816 states to 52816 states and 68795 transitions. [2019-10-02 06:57:37,719 INFO L78 Accepts]: Start accepts. Automaton has 52816 states and 68795 transitions. Word has length 264 [2019-10-02 06:57:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:37,719 INFO L475 AbstractCegarLoop]: Abstraction has 52816 states and 68795 transitions. [2019-10-02 06:57:37,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 06:57:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 52816 states and 68795 transitions. [2019-10-02 06:57:37,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-10-02 06:57:37,755 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:37,755 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 7, 7, 7, 7, 3, 3, 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] [2019-10-02 06:57:37,755 INFO L418 AbstractCegarLoop]: === Iteration 28 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:37,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:37,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1879886609, now seen corresponding path program 1 times [2019-10-02 06:57:37,756 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:37,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:37,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:37,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:57:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:37,793 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:37,793 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:37,793 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:38,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:57:38,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-02 06:57:38,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:57:38,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:38,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-10-02 06:57:38,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 06:57:38,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 06:57:38,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2019-10-02 06:57:38,592 INFO L87 Difference]: Start difference. First operand 52816 states and 68795 transitions. Second operand 12 states. [2019-10-02 06:57:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:44,854 INFO L93 Difference]: Finished difference Result 54628 states and 71381 transitions. [2019-10-02 06:57:44,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 06:57:44,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 270 [2019-10-02 06:57:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:45,022 INFO L225 Difference]: With dead ends: 54628 [2019-10-02 06:57:45,022 INFO L226 Difference]: Without dead ends: 54066 [2019-10-02 06:57:45,051 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2019-10-02 06:57:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54066 states. [2019-10-02 06:57:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54066 to 53466. [2019-10-02 06:57:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53466 states. [2019-10-02 06:57:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53466 states to 53466 states and 69795 transitions. [2019-10-02 06:57:48,550 INFO L78 Accepts]: Start accepts. Automaton has 53466 states and 69795 transitions. Word has length 270 [2019-10-02 06:57:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:48,550 INFO L475 AbstractCegarLoop]: Abstraction has 53466 states and 69795 transitions. [2019-10-02 06:57:48,551 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 06:57:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 53466 states and 69795 transitions. [2019-10-02 06:57:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-10-02 06:57:48,590 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:48,590 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 3, 3, 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] [2019-10-02 06:57:48,590 INFO L418 AbstractCegarLoop]: === Iteration 29 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:48,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1673831831, now seen corresponding path program 2 times [2019-10-02 06:57:48,591 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:48,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:48,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:48,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:48,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:48,636 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:48,636 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:48,636 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:48,850 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:57:49,309 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 06:57:49,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:57:49,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-02 06:57:49,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:57:49,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:49,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-10-02 06:57:49,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 06:57:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 06:57:49,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2019-10-02 06:57:49,636 INFO L87 Difference]: Start difference. First operand 53466 states and 69795 transitions. Second operand 13 states. [2019-10-02 06:57:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:57:57,196 INFO L93 Difference]: Finished difference Result 55278 states and 72381 transitions. [2019-10-02 06:57:57,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-02 06:57:57,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 274 [2019-10-02 06:57:57,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:57:57,344 INFO L225 Difference]: With dead ends: 55278 [2019-10-02 06:57:57,345 INFO L226 Difference]: Without dead ends: 54716 [2019-10-02 06:57:57,366 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2019-10-02 06:57:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54716 states. [2019-10-02 06:57:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54716 to 54116. [2019-10-02 06:57:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54116 states. [2019-10-02 06:57:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54116 states to 54116 states and 70795 transitions. [2019-10-02 06:57:58,970 INFO L78 Accepts]: Start accepts. Automaton has 54116 states and 70795 transitions. Word has length 274 [2019-10-02 06:57:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:57:58,970 INFO L475 AbstractCegarLoop]: Abstraction has 54116 states and 70795 transitions. [2019-10-02 06:57:58,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-02 06:57:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 54116 states and 70795 transitions. [2019-10-02 06:57:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-10-02 06:57:59,012 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:57:59,013 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 3, 3, 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] [2019-10-02 06:57:59,013 INFO L418 AbstractCegarLoop]: === Iteration 30 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:57:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:57:59,013 INFO L82 PathProgramCache]: Analyzing trace with hash -66212618, now seen corresponding path program 1 times [2019-10-02 06:57:59,013 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:57:59,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:57:59,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:59,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:57:59,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:57:59,046 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:57:59,046 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:57:59,046 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:57:59,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:57:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:57:59,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-02 06:57:59,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:57:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:57:59,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:57:59,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2019-10-02 06:57:59,798 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 06:57:59,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 06:57:59,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2019-10-02 06:57:59,799 INFO L87 Difference]: Start difference. First operand 54116 states and 70795 transitions. Second operand 14 states. [2019-10-02 06:58:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:06,218 INFO L93 Difference]: Finished difference Result 55928 states and 73381 transitions. [2019-10-02 06:58:06,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-02 06:58:06,218 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 273 [2019-10-02 06:58:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:06,444 INFO L225 Difference]: With dead ends: 55928 [2019-10-02 06:58:06,444 INFO L226 Difference]: Without dead ends: 55366 [2019-10-02 06:58:06,481 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2019-10-02 06:58:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55366 states. [2019-10-02 06:58:09,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55366 to 54766. [2019-10-02 06:58:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54766 states. [2019-10-02 06:58:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54766 states to 54766 states and 71795 transitions. [2019-10-02 06:58:10,082 INFO L78 Accepts]: Start accepts. Automaton has 54766 states and 71795 transitions. Word has length 273 [2019-10-02 06:58:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:10,083 INFO L475 AbstractCegarLoop]: Abstraction has 54766 states and 71795 transitions. [2019-10-02 06:58:10,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 06:58:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 54766 states and 71795 transitions. [2019-10-02 06:58:10,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-02 06:58:10,129 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:10,129 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:10,129 INFO L418 AbstractCegarLoop]: === Iteration 31 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:10,130 INFO L82 PathProgramCache]: Analyzing trace with hash 890778905, now seen corresponding path program 3 times [2019-10-02 06:58:10,130 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:10,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:10,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:10,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:10,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:10,159 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:10,159 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:10,159 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:10,364 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 06:58:11,443 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-10-02 06:58:11,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:58:11,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 2023 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-02 06:58:11,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 06:58:11,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 06:58:11,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-02 06:58:11,613 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 06:58:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 06:58:11,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-02 06:58:11,614 INFO L87 Difference]: Start difference. First operand 54766 states and 71795 transitions. Second operand 11 states. [2019-10-02 06:58:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:13,529 INFO L93 Difference]: Finished difference Result 109827 states and 143890 transitions. [2019-10-02 06:58:13,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-02 06:58:13,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 282 [2019-10-02 06:58:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:13,723 INFO L225 Difference]: With dead ends: 109827 [2019-10-02 06:58:13,723 INFO L226 Difference]: Without dead ends: 55069 [2019-10-02 06:58:13,851 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-10-02 06:58:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55069 states. [2019-10-02 06:58:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55069 to 54766. [2019-10-02 06:58:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54766 states. [2019-10-02 06:58:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54766 states to 54766 states and 71794 transitions. [2019-10-02 06:58:15,575 INFO L78 Accepts]: Start accepts. Automaton has 54766 states and 71794 transitions. Word has length 282 [2019-10-02 06:58:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:15,575 INFO L475 AbstractCegarLoop]: Abstraction has 54766 states and 71794 transitions. [2019-10-02 06:58:15,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-02 06:58:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 54766 states and 71794 transitions. [2019-10-02 06:58:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-02 06:58:15,623 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:15,623 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:15,623 INFO L418 AbstractCegarLoop]: === Iteration 32 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:15,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1484267576, now seen corresponding path program 1 times [2019-10-02 06:58:15,624 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:15,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:15,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:15,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:58:15,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:15,657 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:15,658 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:15,658 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:15,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:58:16,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-02 06:58:16,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:58:16,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:58:16,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-10-02 06:58:16,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-02 06:58:16,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-02 06:58:16,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2019-10-02 06:58:16,450 INFO L87 Difference]: Start difference. First operand 54766 states and 71794 transitions. Second operand 15 states. [2019-10-02 06:58:23,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:23,182 INFO L93 Difference]: Finished difference Result 56578 states and 74380 transitions. [2019-10-02 06:58:23,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 06:58:23,182 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 282 [2019-10-02 06:58:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:23,393 INFO L225 Difference]: With dead ends: 56578 [2019-10-02 06:58:23,394 INFO L226 Difference]: Without dead ends: 56016 [2019-10-02 06:58:23,433 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2019-10-02 06:58:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56016 states. [2019-10-02 06:58:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56016 to 55416. [2019-10-02 06:58:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55416 states. [2019-10-02 06:58:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55416 states to 55416 states and 72794 transitions. [2019-10-02 06:58:27,068 INFO L78 Accepts]: Start accepts. Automaton has 55416 states and 72794 transitions. Word has length 282 [2019-10-02 06:58:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:27,068 INFO L475 AbstractCegarLoop]: Abstraction has 55416 states and 72794 transitions. [2019-10-02 06:58:27,069 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-02 06:58:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 55416 states and 72794 transitions. [2019-10-02 06:58:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-02 06:58:27,119 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:27,119 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:27,120 INFO L418 AbstractCegarLoop]: === Iteration 33 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:27,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2086641753, now seen corresponding path program 1 times [2019-10-02 06:58:27,120 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:27,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:27,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:27,152 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:27,152 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:27,152 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:27,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:58:27,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2225 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-02 06:58:27,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:58:27,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:58:27,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2019-10-02 06:58:27,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-02 06:58:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-02 06:58:27,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2019-10-02 06:58:27,936 INFO L87 Difference]: Start difference. First operand 55416 states and 72794 transitions. Second operand 16 states. [2019-10-02 06:58:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:34,519 INFO L93 Difference]: Finished difference Result 57228 states and 75380 transitions. [2019-10-02 06:58:34,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-02 06:58:34,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 281 [2019-10-02 06:58:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:34,689 INFO L225 Difference]: With dead ends: 57228 [2019-10-02 06:58:34,689 INFO L226 Difference]: Without dead ends: 56666 [2019-10-02 06:58:34,718 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2019-10-02 06:58:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56666 states. [2019-10-02 06:58:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56666 to 56066. [2019-10-02 06:58:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56066 states. [2019-10-02 06:58:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56066 states to 56066 states and 73794 transitions. [2019-10-02 06:58:36,967 INFO L78 Accepts]: Start accepts. Automaton has 56066 states and 73794 transitions. Word has length 281 [2019-10-02 06:58:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:36,967 INFO L475 AbstractCegarLoop]: Abstraction has 56066 states and 73794 transitions. [2019-10-02 06:58:36,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-02 06:58:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 56066 states and 73794 transitions. [2019-10-02 06:58:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-02 06:58:37,022 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:37,022 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:37,023 INFO L418 AbstractCegarLoop]: === Iteration 34 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:37,023 INFO L82 PathProgramCache]: Analyzing trace with hash -601443329, now seen corresponding path program 2 times [2019-10-02 06:58:37,023 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:37,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:37,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:37,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:37,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:37,057 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:37,057 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:37,057 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:37,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:58:37,714 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 06:58:37,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:58:37,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-02 06:58:37,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:58:38,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:58:38,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-10-02 06:58:38,006 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-02 06:58:38,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-02 06:58:38,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2019-10-02 06:58:38,007 INFO L87 Difference]: Start difference. First operand 56066 states and 73794 transitions. Second operand 17 states. [2019-10-02 06:58:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:45,241 INFO L93 Difference]: Finished difference Result 57878 states and 76380 transitions. [2019-10-02 06:58:45,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-02 06:58:45,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 285 [2019-10-02 06:58:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:45,397 INFO L225 Difference]: With dead ends: 57878 [2019-10-02 06:58:45,397 INFO L226 Difference]: Without dead ends: 57316 [2019-10-02 06:58:45,417 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2019-10-02 06:58:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57316 states. [2019-10-02 06:58:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57316 to 56716. [2019-10-02 06:58:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56716 states. [2019-10-02 06:58:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56716 states to 56716 states and 74794 transitions. [2019-10-02 06:58:47,235 INFO L78 Accepts]: Start accepts. Automaton has 56716 states and 74794 transitions. Word has length 285 [2019-10-02 06:58:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:47,236 INFO L475 AbstractCegarLoop]: Abstraction has 56716 states and 74794 transitions. [2019-10-02 06:58:47,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-02 06:58:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 56716 states and 74794 transitions. [2019-10-02 06:58:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-02 06:58:47,296 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:47,297 INFO L411 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:47,297 INFO L418 AbstractCegarLoop]: === Iteration 35 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:47,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1407055936, now seen corresponding path program 2 times [2019-10-02 06:58:47,297 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:47,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:47,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:47,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:58:47,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:47,324 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:47,325 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:47,325 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:47,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:58:48,006 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 06:58:48,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:58:48,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-02 06:58:48,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:58:48,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:58:48,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2019-10-02 06:58:48,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-02 06:58:48,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-02 06:58:48,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2019-10-02 06:58:48,612 INFO L87 Difference]: Start difference. First operand 56716 states and 74794 transitions. Second operand 18 states. [2019-10-02 06:58:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:58:54,356 INFO L93 Difference]: Finished difference Result 58528 states and 77380 transitions. [2019-10-02 06:58:54,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-02 06:58:54,357 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 294 [2019-10-02 06:58:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:58:54,536 INFO L225 Difference]: With dead ends: 58528 [2019-10-02 06:58:54,536 INFO L226 Difference]: Without dead ends: 57966 [2019-10-02 06:58:54,570 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2019-10-02 06:58:54,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57966 states. [2019-10-02 06:58:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57966 to 57366. [2019-10-02 06:58:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57366 states. [2019-10-02 06:58:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57366 states to 57366 states and 75794 transitions. [2019-10-02 06:58:56,804 INFO L78 Accepts]: Start accepts. Automaton has 57366 states and 75794 transitions. Word has length 294 [2019-10-02 06:58:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:58:56,804 INFO L475 AbstractCegarLoop]: Abstraction has 57366 states and 75794 transitions. [2019-10-02 06:58:56,804 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-02 06:58:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 57366 states and 75794 transitions. [2019-10-02 06:58:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-10-02 06:58:56,869 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:58:56,869 INFO L411 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 9, 9, 8, 3, 3, 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] [2019-10-02 06:58:56,869 INFO L418 AbstractCegarLoop]: === Iteration 36 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:58:56,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:58:56,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1910120123, now seen corresponding path program 1 times [2019-10-02 06:58:56,870 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:58:56,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:58:56,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:56,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:58:56,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:58:56,904 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:58:56,904 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:58:56,904 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:58:57,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:58:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 06:58:57,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-02 06:58:57,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:58:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:58:57,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:58:57,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2019-10-02 06:58:57,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-02 06:58:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-02 06:58:57,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2019-10-02 06:58:57,798 INFO L87 Difference]: Start difference. First operand 57366 states and 75794 transitions. Second operand 19 states. [2019-10-02 06:59:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:59:04,922 INFO L93 Difference]: Finished difference Result 59178 states and 78380 transitions. [2019-10-02 06:59:04,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-02 06:59:04,923 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 296 [2019-10-02 06:59:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:59:05,107 INFO L225 Difference]: With dead ends: 59178 [2019-10-02 06:59:05,108 INFO L226 Difference]: Without dead ends: 58616 [2019-10-02 06:59:05,138 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2019-10-02 06:59:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58616 states. [2019-10-02 06:59:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58616 to 58016. [2019-10-02 06:59:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58016 states. [2019-10-02 06:59:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58016 states to 58016 states and 76794 transitions. [2019-10-02 06:59:08,990 INFO L78 Accepts]: Start accepts. Automaton has 58016 states and 76794 transitions. Word has length 296 [2019-10-02 06:59:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:59:08,990 INFO L475 AbstractCegarLoop]: Abstraction has 58016 states and 76794 transitions. [2019-10-02 06:59:08,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-02 06:59:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 58016 states and 76794 transitions. [2019-10-02 06:59:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2019-10-02 06:59:09,059 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:59:09,059 INFO L411 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 9, 9, 8, 3, 3, 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] [2019-10-02 06:59:09,060 INFO L418 AbstractCegarLoop]: === Iteration 37 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:59:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:59:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1052128925, now seen corresponding path program 2 times [2019-10-02 06:59:09,060 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:59:09,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:59:09,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:09,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 06:59:09,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:09,087 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:59:09,088 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:59:09,088 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:59:09,276 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-10-02 06:59:09,699 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-02 06:59:09,700 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:59:09,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-02 06:59:09,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:59:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:59:10,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:59:10,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2019-10-02 06:59:10,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-02 06:59:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-02 06:59:10,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2019-10-02 06:59:10,034 INFO L87 Difference]: Start difference. First operand 58016 states and 76794 transitions. Second operand 20 states. [2019-10-02 06:59:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:59:18,019 INFO L93 Difference]: Finished difference Result 59828 states and 79380 transitions. [2019-10-02 06:59:18,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 06:59:18,020 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 300 [2019-10-02 06:59:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:59:18,199 INFO L225 Difference]: With dead ends: 59828 [2019-10-02 06:59:18,200 INFO L226 Difference]: Without dead ends: 59266 [2019-10-02 06:59:18,229 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2019-10-02 06:59:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59266 states. [2019-10-02 06:59:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59266 to 58666. [2019-10-02 06:59:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58666 states. [2019-10-02 06:59:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58666 states to 58666 states and 77794 transitions. [2019-10-02 06:59:20,621 INFO L78 Accepts]: Start accepts. Automaton has 58666 states and 77794 transitions. Word has length 300 [2019-10-02 06:59:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:59:20,622 INFO L475 AbstractCegarLoop]: Abstraction has 58666 states and 77794 transitions. [2019-10-02 06:59:20,622 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-02 06:59:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 58666 states and 77794 transitions. [2019-10-02 06:59:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-10-02 06:59:20,693 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:59:20,693 INFO L411 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 9, 9, 8, 3, 3, 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] [2019-10-02 06:59:20,693 INFO L418 AbstractCegarLoop]: === Iteration 38 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:59:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:59:20,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1161501880, now seen corresponding path program 3 times [2019-10-02 06:59:20,693 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:59:20,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:59:20,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:20,698 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:59:20,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:20,725 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:59:20,725 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:59:20,725 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:59:20,948 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 06:59:31,766 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-10-02 06:59:31,767 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:59:31,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-02 06:59:31,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:59:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:59:32,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:59:32,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2019-10-02 06:59:32,163 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-02 06:59:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-02 06:59:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2019-10-02 06:59:32,164 INFO L87 Difference]: Start difference. First operand 58666 states and 77794 transitions. Second operand 21 states. [2019-10-02 06:59:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 06:59:40,460 INFO L93 Difference]: Finished difference Result 60478 states and 80380 transitions. [2019-10-02 06:59:40,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-02 06:59:40,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 306 [2019-10-02 06:59:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 06:59:40,651 INFO L225 Difference]: With dead ends: 60478 [2019-10-02 06:59:40,651 INFO L226 Difference]: Without dead ends: 59916 [2019-10-02 06:59:40,679 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2019-10-02 06:59:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59916 states. [2019-10-02 06:59:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59916 to 59316. [2019-10-02 06:59:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59316 states. [2019-10-02 06:59:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59316 states to 59316 states and 78794 transitions. [2019-10-02 06:59:44,820 INFO L78 Accepts]: Start accepts. Automaton has 59316 states and 78794 transitions. Word has length 306 [2019-10-02 06:59:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 06:59:44,820 INFO L475 AbstractCegarLoop]: Abstraction has 59316 states and 78794 transitions. [2019-10-02 06:59:44,820 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-02 06:59:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 59316 states and 78794 transitions. [2019-10-02 06:59:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-10-02 06:59:44,899 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 06:59:44,899 INFO L411 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 9, 9, 8, 3, 3, 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] [2019-10-02 06:59:44,899 INFO L418 AbstractCegarLoop]: === Iteration 39 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 06:59:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 06:59:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash 567379383, now seen corresponding path program 3 times [2019-10-02 06:59:44,900 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 06:59:44,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 06:59:44,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:44,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 06:59:44,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 06:59:44,926 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 06:59:44,926 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 06:59:44,926 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 06:59:45,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-02 06:59:54,746 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-10-02 06:59:54,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 06:59:54,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-02 06:59:54,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 06:59:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 06:59:55,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 06:59:55,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2019-10-02 06:59:55,115 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-02 06:59:55,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-02 06:59:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2019-10-02 06:59:55,116 INFO L87 Difference]: Start difference. First operand 59316 states and 78794 transitions. Second operand 22 states. [2019-10-02 07:00:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 07:00:03,977 INFO L93 Difference]: Finished difference Result 61128 states and 81380 transitions. [2019-10-02 07:00:03,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-02 07:00:03,977 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 305 [2019-10-02 07:00:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 07:00:04,168 INFO L225 Difference]: With dead ends: 61128 [2019-10-02 07:00:04,169 INFO L226 Difference]: Without dead ends: 60566 [2019-10-02 07:00:04,198 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2019-10-02 07:00:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60566 states. [2019-10-02 07:00:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60566 to 59966. [2019-10-02 07:00:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59966 states. [2019-10-02 07:00:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59966 states to 59966 states and 79794 transitions. [2019-10-02 07:00:06,756 INFO L78 Accepts]: Start accepts. Automaton has 59966 states and 79794 transitions. Word has length 305 [2019-10-02 07:00:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 07:00:06,756 INFO L475 AbstractCegarLoop]: Abstraction has 59966 states and 79794 transitions. [2019-10-02 07:00:06,756 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-02 07:00:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 59966 states and 79794 transitions. [2019-10-02 07:00:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-02 07:00:06,857 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 07:00:06,857 INFO L411 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 9, 9, 8, 3, 3, 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] [2019-10-02 07:00:06,858 INFO L418 AbstractCegarLoop]: === Iteration 40 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 07:00:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 07:00:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash 305549839, now seen corresponding path program 4 times [2019-10-02 07:00:06,858 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 07:00:06,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 07:00:06,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 07:00:06,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 07:00:06,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 07:00:06,887 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 07:00:06,887 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 07:00:06,887 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 07:00:07,105 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-10-02 07:00:07,466 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-02 07:00:07,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-02 07:00:07,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-02 07:00:07,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 07:00:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-02 07:00:07,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-02 07:00:07,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2019-10-02 07:00:07,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-02 07:00:07,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-02 07:00:07,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2019-10-02 07:00:07,873 INFO L87 Difference]: Start difference. First operand 59966 states and 79794 transitions. Second operand 23 states. [2019-10-02 07:00:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 07:00:14,990 INFO L93 Difference]: Finished difference Result 61778 states and 82380 transitions. [2019-10-02 07:00:14,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-02 07:00:14,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 309 [2019-10-02 07:00:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 07:00:15,182 INFO L225 Difference]: With dead ends: 61778 [2019-10-02 07:00:15,182 INFO L226 Difference]: Without dead ends: 61216 [2019-10-02 07:00:15,209 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2019-10-02 07:00:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61216 states. [2019-10-02 07:00:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61216 to 60616. [2019-10-02 07:00:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60616 states. [2019-10-02 07:00:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60616 states to 60616 states and 80794 transitions. [2019-10-02 07:00:17,794 INFO L78 Accepts]: Start accepts. Automaton has 60616 states and 80794 transitions. Word has length 309 [2019-10-02 07:00:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 07:00:17,794 INFO L475 AbstractCegarLoop]: Abstraction has 60616 states and 80794 transitions. [2019-10-02 07:00:17,794 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-02 07:00:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 60616 states and 80794 transitions. [2019-10-02 07:00:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-10-02 07:00:17,890 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 07:00:17,890 INFO L411 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 9, 9, 8, 3, 3, 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] [2019-10-02 07:00:17,890 INFO L418 AbstractCegarLoop]: === Iteration 41 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 07:00:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 07:00:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1882010215, now seen corresponding path program 5 times [2019-10-02 07:00:17,891 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 07:00:17,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 07:00:17,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 07:00:17,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 07:00:17,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 07:00:17,917 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-10-02 07:00:17,918 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-10-02 07:00:17,918 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-02 07:00:18,141 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1