/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:28:05,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:28:05,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:28:05,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:28:05,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:28:05,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:28:05,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:28:05,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:28:05,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:28:05,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:28:05,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:28:05,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:28:05,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:28:05,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:28:05,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:28:05,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:28:05,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:28:05,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:28:05,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:28:05,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:28:05,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:28:05,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:28:05,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:28:05,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:28:05,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 22:28:05,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 22:28:05,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 22:28:05,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 22:28:05,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 22:28:05,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 22:28:05,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 22:28:05,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 22:28:05,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 22:28:05,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 22:28:05,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 22:28:05,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 22:28:05,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 22:28:05,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 22:28:05,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:28:05,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:28:05,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:28:05,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-27 22:28:05,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:28:05,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:28:05,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:28:05,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:28:05,400 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:28:05,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:28:05,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:28:05,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:28:05,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:28:05,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:28:05,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:28:05,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:28:05,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:28:05,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:28:05,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:28:05,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:28:05,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:28:05,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:28:05,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:28:05,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:28:05,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:28:05,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:28:05,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:28:05,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:28:05,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:28:05,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:28:05,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-27 22:28:05,407 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 22:28:05,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:28:05,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:28:05,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:28:05,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:28:05,916 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:28:05,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-27 22:28:06,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dbf86ae7/37ba1b42cd6a44c2a4387b87aefa5762/FLAG27b46d6c2 [2020-08-27 22:28:06,929 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:28:06,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-27 22:28:06,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dbf86ae7/37ba1b42cd6a44c2a4387b87aefa5762/FLAG27b46d6c2 [2020-08-27 22:28:07,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dbf86ae7/37ba1b42cd6a44c2a4387b87aefa5762 [2020-08-27 22:28:07,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:28:07,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:28:07,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:28:07,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:28:07,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:28:07,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:28:07" (1/1) ... [2020-08-27 22:28:07,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d16764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:07, skipping insertion in model container [2020-08-27 22:28:07,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:28:07" (1/1) ... [2020-08-27 22:28:07,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:28:07,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:28:09,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:28:09,026 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:28:09,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:28:09,428 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:28:09,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09 WrapperNode [2020-08-27 22:28:09,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:28:09,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:28:09,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:28:09,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:28:09,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... [2020-08-27 22:28:09,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:28:09,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:28:09,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:28:09,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:28:09,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-27 22:28:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:28:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:28:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-27 22:28:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-27 22:28:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-27 22:28:09,855 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-27 22:28:09,856 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-27 22:28:09,856 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-27 22:28:09,857 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-27 22:28:09,857 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-27 22:28:09,857 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-27 22:28:09,858 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-27 22:28:09,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-27 22:28:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-27 22:28:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 22:28:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-27 22:28:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-27 22:28:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-27 22:28:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-27 22:28:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-27 22:28:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-27 22:28:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-27 22:28:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-27 22:28:09,864 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-27 22:28:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-27 22:28:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-27 22:28:09,865 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-27 22:28:09,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-27 22:28:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-27 22:28:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-27 22:28:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-27 22:28:09,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-27 22:28:09,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-27 22:28:09,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-27 22:28:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-27 22:28:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-27 22:28:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-27 22:28:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-27 22:28:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-27 22:28:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-27 22:28:09,872 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-27 22:28:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-27 22:28:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-27 22:28:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-27 22:28:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-27 22:28:09,873 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-27 22:28:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-27 22:28:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-27 22:28:09,874 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-27 22:28:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-27 22:28:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-27 22:28:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-27 22:28:09,875 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-27 22:28:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-27 22:28:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-27 22:28:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-27 22:28:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:28:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-27 22:28:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-27 22:28:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-27 22:28:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-27 22:28:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-27 22:28:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-27 22:28:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 22:28:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-27 22:28:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-27 22:28:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-27 22:28:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-27 22:28:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-27 22:28:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 22:28:09,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-27 22:28:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-27 22:28:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-27 22:28:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-27 22:28:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-27 22:28:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-27 22:28:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 22:28:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-27 22:28:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 22:28:09,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-27 22:28:09,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-27 22:28:09,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-27 22:28:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-27 22:28:09,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-27 22:28:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-27 22:28:09,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-27 22:28:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-27 22:28:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-27 22:28:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-27 22:28:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-27 22:28:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-27 22:28:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-27 22:28:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-27 22:28:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-27 22:28:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-27 22:28:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-27 22:28:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-27 22:28:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-27 22:28:09,900 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-27 22:28:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-27 22:28:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-27 22:28:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-27 22:28:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-27 22:28:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-27 22:28:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-27 22:28:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-27 22:28:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-27 22:28:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 22:28:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-27 22:28:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-27 22:28:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-27 22:28:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-27 22:28:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-27 22:28:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-27 22:28:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:28:10,555 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-27 22:28:11,455 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:28:11,455 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-27 22:28:11,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:28:11 BoogieIcfgContainer [2020-08-27 22:28:11,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:28:11,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:28:11,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:28:11,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:28:11,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:28:07" (1/3) ... [2020-08-27 22:28:11,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2917537f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:28:11, skipping insertion in model container [2020-08-27 22:28:11,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:28:09" (2/3) ... [2020-08-27 22:28:11,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2917537f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:28:11, skipping insertion in model container [2020-08-27 22:28:11,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:28:11" (3/3) ... [2020-08-27 22:28:11,473 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-27 22:28:11,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:28:11,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:28:11,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:28:11,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:28:11,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:28:11,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:28:11,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:28:11,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:28:11,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:28:11,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:28:11,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:28:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-27 22:28:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-27 22:28:11,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:11,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:28:11,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-27 22:28:11,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:11,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812983182] [2020-08-27 22:28:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,169 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-27 22:28:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 22:28:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-27 22:28:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:28:12,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812983182] [2020-08-27 22:28:12,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:12,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 22:28:12,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029595576] [2020-08-27 22:28:12,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 22:28:12,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:12,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 22:28:12,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 22:28:12,402 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-27 22:28:12,537 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:14,554 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-27 22:28:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:18,534 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-27 22:28:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 22:28:18,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-27 22:28:18,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:18,573 INFO L225 Difference]: With dead ends: 1386 [2020-08-27 22:28:18,573 INFO L226 Difference]: Without dead ends: 987 [2020-08-27 22:28:18,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-27 22:28:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-27 22:28:18,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-27 22:28:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-27 22:28:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-27 22:28:18,807 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-27 22:28:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:18,808 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-27 22:28:18,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 22:28:18,808 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-27 22:28:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-27 22:28:18,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:18,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:28:18,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:28:18,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:18,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:18,815 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-27 22:28:18,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:18,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357481481] [2020-08-27 22:28:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,042 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-27 22:28:19,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:28:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 22:28:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:28:19,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357481481] [2020-08-27 22:28:19,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:19,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 22:28:19,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897956237] [2020-08-27 22:28:19,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 22:28:19,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:19,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 22:28:19,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 22:28:19,233 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-27 22:28:19,359 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:19,524 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-27 22:28:19,733 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-27 22:28:20,425 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-27 22:28:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:23,649 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-27 22:28:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 22:28:23,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-27 22:28:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:23,661 INFO L225 Difference]: With dead ends: 1673 [2020-08-27 22:28:23,661 INFO L226 Difference]: Without dead ends: 986 [2020-08-27 22:28:23,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-27 22:28:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-27 22:28:23,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-27 22:28:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-27 22:28:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-27 22:28:23,747 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-27 22:28:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:23,748 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-27 22:28:23,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 22:28:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-27 22:28:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-27 22:28:23,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:23,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-27 22:28:23,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 22:28:23,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-27 22:28:23,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:23,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166106608] [2020-08-27 22:28:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:28:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:28:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-27 22:28:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-27 22:28:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-27 22:28:24,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166106608] [2020-08-27 22:28:24,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:24,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 22:28:24,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551249883] [2020-08-27 22:28:24,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 22:28:24,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:24,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 22:28:24,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-27 22:28:24,547 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-27 22:28:24,691 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:24,882 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-27 22:28:29,834 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-27 22:28:32,094 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-27 22:28:32,309 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-27 22:28:32,456 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-27 22:28:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:32,694 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-27 22:28:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 22:28:32,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-27 22:28:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:32,707 INFO L225 Difference]: With dead ends: 2445 [2020-08-27 22:28:32,707 INFO L226 Difference]: Without dead ends: 1743 [2020-08-27 22:28:32,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-27 22:28:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-27 22:28:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-27 22:28:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-27 22:28:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-27 22:28:32,897 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-27 22:28:32,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:32,898 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-27 22:28:32,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 22:28:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-27 22:28:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:28:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:32,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-27 22:28:32,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 22:28:32,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-27 22:28:32,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:32,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156994977] [2020-08-27 22:28:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:28:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:28:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-27 22:28:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 22:28:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-27 22:28:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-27 22:28:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-27 22:28:33,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156994977] [2020-08-27 22:28:33,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:33,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 22:28:33,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355899067] [2020-08-27 22:28:33,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 22:28:33,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:33,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 22:28:33,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-27 22:28:33,647 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-27 22:28:33,763 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:34,146 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-27 22:28:35,270 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-27 22:28:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:40,429 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-27 22:28:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 22:28:40,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-27 22:28:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:40,450 INFO L225 Difference]: With dead ends: 4737 [2020-08-27 22:28:40,450 INFO L226 Difference]: Without dead ends: 3284 [2020-08-27 22:28:40,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-27 22:28:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-27 22:28:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-27 22:28:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-27 22:28:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-27 22:28:40,776 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-27 22:28:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:40,777 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-27 22:28:40,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 22:28:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-27 22:28:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:28:40,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:40,786 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-27 22:28:40,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 22:28:40,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:40,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:40,787 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-27 22:28:40,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:40,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479022879] [2020-08-27 22:28:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-27 22:28:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 22:28:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 22:28:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 22:28:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-27 22:28:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-27 22:28:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-27 22:28:41,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479022879] [2020-08-27 22:28:41,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:41,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 22:28:41,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614605251] [2020-08-27 22:28:41,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 22:28:41,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:41,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 22:28:41,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-27 22:28:41,418 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-27 22:28:41,555 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:45,670 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-27 22:28:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 22:28:45,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-27 22:28:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:45,680 INFO L225 Difference]: With dead ends: 4462 [2020-08-27 22:28:45,680 INFO L226 Difference]: Without dead ends: 1751 [2020-08-27 22:28:45,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-27 22:28:45,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-27 22:28:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-27 22:28:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-27 22:28:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-27 22:28:45,818 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-27 22:28:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:45,819 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-27 22:28:45,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 22:28:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-27 22:28:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-27 22:28:45,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:45,824 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-27 22:28:45,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 22:28:45,825 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-27 22:28:45,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:45,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100387350] [2020-08-27 22:28:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:28:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:28:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 22:28:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 22:28:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-27 22:28:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-27 22:28:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-27 22:28:46,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100387350] [2020-08-27 22:28:46,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:46,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 22:28:46,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943270643] [2020-08-27 22:28:46,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 22:28:46,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 22:28:46,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-27 22:28:46,542 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-27 22:28:47,942 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-27 22:28:49,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:28:49,853 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-27 22:28:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 22:28:49,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-27 22:28:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:28:49,865 INFO L225 Difference]: With dead ends: 2489 [2020-08-27 22:28:49,865 INFO L226 Difference]: Without dead ends: 1716 [2020-08-27 22:28:49,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-27 22:28:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-27 22:28:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-27 22:28:50,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-27 22:28:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-27 22:28:50,014 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-27 22:28:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:28:50,015 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-27 22:28:50,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 22:28:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-27 22:28:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-27 22:28:50,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:28:50,020 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-27 22:28:50,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 22:28:50,020 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:28:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:28:50,021 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-27 22:28:50,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:28:50,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919639269] [2020-08-27 22:28:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:28:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,374 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-27 22:28:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:28:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:28:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:28:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:28:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 22:28:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 22:28:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:28:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:28:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-27 22:28:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:28:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-27 22:28:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:28:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-27 22:28:51,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919639269] [2020-08-27 22:28:51,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:28:51,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-27 22:28:51,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580234366] [2020-08-27 22:28:51,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 22:28:51,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:28:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 22:28:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-27 22:28:51,123 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-27 22:28:51,236 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-27 22:28:51,581 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-27 22:28:53,563 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-27 22:28:55,131 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-27 22:28:55,460 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-27 22:28:55,663 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-27 22:29:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:29:00,520 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-27 22:29:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 22:29:00,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-27 22:29:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:29:00,536 INFO L225 Difference]: With dead ends: 3355 [2020-08-27 22:29:00,536 INFO L226 Difference]: Without dead ends: 1940 [2020-08-27 22:29:00,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-27 22:29:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-27 22:29:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-27 22:29:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-27 22:29:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-27 22:29:00,864 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-27 22:29:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:29:00,865 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-27 22:29:00,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 22:29:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-27 22:29:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-27 22:29:00,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:29:00,875 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-27 22:29:00,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 22:29:00,876 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:29:00,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:29:00,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-27 22:29:00,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:29:00,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948321486] [2020-08-27 22:29:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:29:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,309 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-27 22:29:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 22:29:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:29:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:29:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:29:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:29:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 22:29:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 22:29:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 22:29:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-27 22:29:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 22:29:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 22:29:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-27 22:29:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:29:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 22:29:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat