/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -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 0.1.25-5644d1e-m [2020-08-19 03:17:10,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:17:10,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:17:10,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:17:10,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:17:10,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:17:10,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:17:10,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:17:10,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:17:10,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:17:10,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:17:10,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:17:10,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:17:10,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:17:10,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:17:10,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:17:10,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:17:10,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:17:10,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:17:10,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:17:10,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:17:10,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:17:10,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:17:10,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:17:10,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:17:10,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:17:10,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:17:10,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:17:10,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:17:10,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:17:10,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:17:10,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:17:10,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:17:10,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:17:10,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:17:10,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:17:10,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:17:10,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:17:10,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:17:10,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:17:10,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:17:10,768 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 [2020-08-19 03:17:10,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:17:10,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:17:10,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:17:10,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:17:10,807 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:17:10,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:17:10,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:17:10,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:17:10,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:17:10,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:17:10,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:17:10,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:17:10,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:17:10,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:17:10,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:17:10,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:17:10,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:17:10,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:17:10,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:17:10,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:17:10,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:17:10,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:17:10,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:17:10,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:17:10,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:17:10,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:17:10,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 03:17:10,813 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 03:17:11,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:17:11,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:17:11,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:17:11,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:17:11,137 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:17:11,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 03:17:11,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c6fac59/9dfde547d31149ee9869c31cb7b82fe1/FLAG3660900c1 [2020-08-19 03:17:11,978 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:17:11,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 03:17:12,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c6fac59/9dfde547d31149ee9869c31cb7b82fe1/FLAG3660900c1 [2020-08-19 03:17:12,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c6fac59/9dfde547d31149ee9869c31cb7b82fe1 [2020-08-19 03:17:12,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:17:12,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:17:12,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:17:12,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:17:12,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:17:12,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:17:12" (1/1) ... [2020-08-19 03:17:12,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ae4cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:12, skipping insertion in model container [2020-08-19 03:17:12,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:17:12" (1/1) ... [2020-08-19 03:17:12,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:17:12,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:17:13,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:17:13,466 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:17:13,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:17:13,719 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:17:13,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13 WrapperNode [2020-08-19 03:17:13,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:17:13,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:17:13,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:17:13,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:17:13,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (1/1) ... [2020-08-19 03:17:13,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:17:13,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:17:13,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:17:13,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:17:13,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (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 [2020-08-19 03:17:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:17:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:17:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 03:17:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 03:17:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-19 03:17:13,959 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 03:17:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 03:17:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 03:17:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-19 03:17:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-19 03:17:13,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 03:17:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-19 03:17:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-19 03:17:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-19 03:17:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:17:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-19 03:17:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 03:17:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 03:17:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 03:17:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 03:17:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 03:17:13,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 03:17:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 03:17:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 03:17:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-19 03:17:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 03:17:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-19 03:17:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-19 03:17:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-19 03:17:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-19 03:17:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-19 03:17:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-19 03:17:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-19 03:17:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 03:17:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 03:17:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 03:17:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 03:17:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 03:17:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 03:17:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 03:17:13,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 03:17:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-19 03:17:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-19 03:17:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 03:17:13,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 03:17:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:17:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 03:17:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 03:17:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-19 03:17:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-19 03:17:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:17:13,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 03:17:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-19 03:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 03:17:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 03:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 03:17:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 03:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 03:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 03:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 03:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 03:17:13,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 03:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-19 03:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 03:17:13,989 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 03:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-19 03:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-19 03:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-19 03:17:13,990 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-19 03:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-19 03:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-19 03:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-19 03:17:13,997 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-19 03:17:13,998 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-19 03:17:13,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:17:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-19 03:17:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-19 03:17:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:17:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 03:17:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:17:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 03:17:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:17:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 03:17:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:17:14,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 03:17:15,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:17:15,372 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 03:17:15,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:17:15 BoogieIcfgContainer [2020-08-19 03:17:15,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:17:15,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:17:15,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:17:15,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:17:15,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:17:12" (1/3) ... [2020-08-19 03:17:15,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c43e63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:17:15, skipping insertion in model container [2020-08-19 03:17:15,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:13" (2/3) ... [2020-08-19 03:17:15,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c43e63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:17:15, skipping insertion in model container [2020-08-19 03:17:15,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:17:15" (3/3) ... [2020-08-19 03:17:15,388 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 [2020-08-19 03:17:15,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:17:15,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:17:15,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:17:15,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:17:15,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:17:15,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:17:15,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:17:15,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:17:15,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:17:15,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:17:15,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:17:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-19 03:17:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 03:17:15,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:15,500 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] [2020-08-19 03:17:15,501 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:15,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-19 03:17:15,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:15,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048309771] [2020-08-19 03:17:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:17:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 03:17:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:17:16,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048309771] [2020-08-19 03:17:16,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:16,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:17:16,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404180019] [2020-08-19 03:17:16,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:17:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:16,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:17:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:17:16,264 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-19 03:17:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:21,250 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-19 03:17:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:17:21,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-19 03:17:21,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:21,282 INFO L225 Difference]: With dead ends: 1386 [2020-08-19 03:17:21,282 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 03:17:21,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:17:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 03:17:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-19 03:17:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 03:17:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-19 03:17:21,557 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-19 03:17:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:21,558 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-19 03:17:21,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:17:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-19 03:17:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 03:17:21,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:21,575 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] [2020-08-19 03:17:21,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:17:21,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:21,577 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-19 03:17:21,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:21,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789750683] [2020-08-19 03:17:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:17:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:17:21,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789750683] [2020-08-19 03:17:21,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:21,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:17:21,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431057240] [2020-08-19 03:17:21,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:17:21,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:21,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:17:21,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:17:21,937 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-19 03:17:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:25,427 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-19 03:17:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:17:25,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 03:17:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:25,437 INFO L225 Difference]: With dead ends: 1673 [2020-08-19 03:17:25,437 INFO L226 Difference]: Without dead ends: 986 [2020-08-19 03:17:25,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:17:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-19 03:17:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-19 03:17:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 03:17:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-19 03:17:25,530 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-19 03:17:25,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:25,530 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-19 03:17:25,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:17:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-19 03:17:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:17:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:25,535 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] [2020-08-19 03:17:25,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:17:25,536 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-19 03:17:25,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:25,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471187101] [2020-08-19 03:17:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:17:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 03:17:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 03:17:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 03:17:26,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471187101] [2020-08-19 03:17:26,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:26,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:17:26,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458792398] [2020-08-19 03:17:26,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:17:26,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:26,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:17:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:17:26,018 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-19 03:17:26,413 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-19 03:17:31,531 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-19 03:17:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:31,924 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-19 03:17:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:17:31,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 03:17:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:31,941 INFO L225 Difference]: With dead ends: 2445 [2020-08-19 03:17:31,941 INFO L226 Difference]: Without dead ends: 1743 [2020-08-19 03:17:31,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:17:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-19 03:17:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-19 03:17:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-19 03:17:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-19 03:17:32,153 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-19 03:17:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:32,154 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-19 03:17:32,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:17:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-19 03:17:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 03:17:32,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:32,165 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] [2020-08-19 03:17:32,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:17:32,165 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-19 03:17:32,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:32,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656767936] [2020-08-19 03:17:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:17:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 03:17:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:17:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 03:17:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:17:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 03:17:32,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656767936] [2020-08-19 03:17:32,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:32,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:17:32,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591032784] [2020-08-19 03:17:32,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:17:32,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:32,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:17:32,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:17:32,790 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-19 03:17:37,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:37,685 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-19 03:17:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:17:37,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 03:17:37,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:37,706 INFO L225 Difference]: With dead ends: 4737 [2020-08-19 03:17:37,706 INFO L226 Difference]: Without dead ends: 3284 [2020-08-19 03:17:37,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:17:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-19 03:17:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-19 03:17:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-19 03:17:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-19 03:17:38,040 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-19 03:17:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:38,042 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-19 03:17:38,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:17:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-19 03:17:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 03:17:38,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:38,052 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] [2020-08-19 03:17:38,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:17:38,052 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-19 03:17:38,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:38,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345765685] [2020-08-19 03:17:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:17:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:17:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:17:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:17:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 03:17:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:17:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 03:17:38,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345765685] [2020-08-19 03:17:38,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:38,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:17:38,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392066832] [2020-08-19 03:17:38,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:17:38,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:38,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:17:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:17:38,514 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-19 03:17:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:41,697 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-19 03:17:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:17:41,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 03:17:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:41,708 INFO L225 Difference]: With dead ends: 4462 [2020-08-19 03:17:41,708 INFO L226 Difference]: Without dead ends: 1751 [2020-08-19 03:17:41,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:17:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-19 03:17:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-19 03:17:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-19 03:17:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-19 03:17:41,844 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-19 03:17:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-19 03:17:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:17:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-19 03:17:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 03:17:41,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:41,848 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] [2020-08-19 03:17:41,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:17:41,849 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:41,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-19 03:17:41,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:41,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715284910] [2020-08-19 03:17:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:17:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:17:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:17:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 03:17:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:17:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 03:17:42,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715284910] [2020-08-19 03:17:42,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:42,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:17:42,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669601176] [2020-08-19 03:17:42,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:17:42,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:17:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:17:42,298 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-19 03:17:44,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:44,682 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-19 03:17:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:17:44,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 03:17:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:44,696 INFO L225 Difference]: With dead ends: 2489 [2020-08-19 03:17:44,697 INFO L226 Difference]: Without dead ends: 1716 [2020-08-19 03:17:44,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:17:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-19 03:17:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-19 03:17:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-19 03:17:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-19 03:17:44,833 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-19 03:17:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:44,834 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-19 03:17:44,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:17:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-19 03:17:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 03:17:44,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:44,838 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] [2020-08-19 03:17:44,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:17:44,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:44,839 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-19 03:17:44,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:44,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211658464] [2020-08-19 03:17:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:17:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:17:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:17:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 03:17:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 03:17:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 03:17:45,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211658464] [2020-08-19 03:17:45,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:45,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:17:45,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596175307] [2020-08-19 03:17:45,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:17:45,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:45,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:17:45,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:17:45,460 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-19 03:17:47,406 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 03:17:48,578 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 03:17:48,813 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 03:17:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:52,624 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-19 03:17:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:17:52,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 03:17:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:52,644 INFO L225 Difference]: With dead ends: 3355 [2020-08-19 03:17:52,644 INFO L226 Difference]: Without dead ends: 1940 [2020-08-19 03:17:52,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-19 03:17:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-19 03:17:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-19 03:17:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-19 03:17:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-19 03:17:52,883 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-19 03:17:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:52,884 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-19 03:17:52,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:17:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-19 03:17:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-19 03:17:52,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:52,893 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] [2020-08-19 03:17:52,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:17:52,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:52,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-19 03:17:52,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:52,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654082354] [2020-08-19 03:17:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,248 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-19 03:17:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:17:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:17:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:17:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:17:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:17:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:17:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:17:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 03:17:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 03:17:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 03:17:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-19 03:17:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-19 03:17:54,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654082354] [2020-08-19 03:17:54,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:54,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 03:17:54,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355336393] [2020-08-19 03:17:54,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:17:54,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:54,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:17:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:17:54,255 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-19 03:17:54,381 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 03:17:54,698 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-19 03:17:55,014 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-19 03:17:57,034 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-19 03:17:58,392 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 03:17:58,602 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 03:18:03,192 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 03:18:03,419 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-08-19 03:18:06,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:18:06,711 INFO L93 Difference]: Finished difference Result 3441 states and 4458 transitions. [2020-08-19 03:18:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 03:18:06,717 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2020-08-19 03:18:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:18:06,731 INFO L225 Difference]: With dead ends: 3441 [2020-08-19 03:18:06,731 INFO L226 Difference]: Without dead ends: 2674 [2020-08-19 03:18:06,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 03:18:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-08-19 03:18:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1764. [2020-08-19 03:18:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-08-19 03:18:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2110 transitions. [2020-08-19 03:18:06,961 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2110 transitions. Word has length 197 [2020-08-19 03:18:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:18:06,962 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2110 transitions. [2020-08-19 03:18:06,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:18:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2110 transitions. [2020-08-19 03:18:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-19 03:18:06,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:18:06,968 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, 1, 1] [2020-08-19 03:18:06,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:18:06,968 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:18:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:18:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash -340207207, now seen corresponding path program 1 times [2020-08-19 03:18:06,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:18:06,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690343497] [2020-08-19 03:18:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:18:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:18:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:18:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:18:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:18:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:18:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:18:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:18:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:18:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:18:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:18:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:18:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:18:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:18:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:18:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 03:18:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:18:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:18:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 03:18:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:18:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 03:18:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:18:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 03:18:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:18:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-19 03:18:07,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690343497] [2020-08-19 03:18:07,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:18:07,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:18:07,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350800706] [2020-08-19 03:18:07,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:18:07,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:18:07,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:18:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:18:07,575 INFO L87 Difference]: Start difference. First operand 1764 states and 2110 transitions. Second operand 11 states. [2020-08-19 03:18:07,700 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97