/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -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 04:54:11,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:54:11,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:54:11,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:54:11,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:54:11,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:54:11,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:54:11,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:54:11,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:54:11,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:54:11,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:54:11,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:54:11,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:54:11,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:54:11,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:54:11,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:54:11,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:54:11,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:54:11,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:54:11,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:54:11,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:54:11,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:54:11,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:54:11,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:54:11,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:54:11,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:54:11,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:54:11,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:54:11,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:54:11,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:54:11,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:54:11,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:54:11,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:54:11,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:54:11,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:54:11,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:54:11,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:54:11,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:54:11,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:54:11,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:54:11,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:54:11,793 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 04:54:11,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:54:11,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:54:11,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:54:11,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:54:11,843 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:54:11,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:54:11,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:54:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:54:11,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:54:11,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:54:11,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:54:11,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:54:11,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:54:11,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:54:11,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:54:11,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:54:11,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:54:11,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:54:11,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:54:11,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:54:11,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:54:11,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:54:11,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:54:11,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:54:11,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:54:11,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:54:11,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 04:54:11,849 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:54:12,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:54:12,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:54:12,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:54:12,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:54:12,205 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:54:12,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 04:54:12,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53cd6600/f1a11a369bec4d4487b025f665e3a84e/FLAGd010ceb6d [2020-08-19 04:54:13,043 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:54:13,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 04:54:13,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53cd6600/f1a11a369bec4d4487b025f665e3a84e/FLAGd010ceb6d [2020-08-19 04:54:13,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d53cd6600/f1a11a369bec4d4487b025f665e3a84e [2020-08-19 04:54:13,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:54:13,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:54:13,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:54:13,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:54:13,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:54:13,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:54:13" (1/1) ... [2020-08-19 04:54:13,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ec240c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:13, skipping insertion in model container [2020-08-19 04:54:13,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:54:13" (1/1) ... [2020-08-19 04:54:13,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:54:13,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:54:14,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:54:14,613 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:54:14,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:54:14,889 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:54:14,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14 WrapperNode [2020-08-19 04:54:14,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:54:14,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:54:14,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:54:14,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:54:14,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:14,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:14,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:14,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:15,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:15,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:15,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (1/1) ... [2020-08-19 04:54:15,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:54:15,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:54:15,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:54:15,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:54:15,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (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 04:54:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:54:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:54:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 04:54:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 04:54:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-19 04:54:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 04:54:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 04:54:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 04:54:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-19 04:54:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-19 04:54:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 04:54:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-19 04:54:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-19 04:54:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-19 04:54:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:54:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-19 04:54:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 04:54:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 04:54:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-19 04:54:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 04:54:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-19 04:54:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-19 04:54:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-19 04:54:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-19 04:54:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-19 04:54:15,221 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 04:54:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 04:54:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 04:54:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 04:54:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 04:54:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-19 04:54:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-19 04:54:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-19 04:54:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 04:54:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 04:54:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 04:54:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 04:54:15,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 04:54:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 04:54:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 04:54:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 04:54:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 04:54:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 04:54:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 04:54:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 04:54:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-19 04:54:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-19 04:54:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-19 04:54:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-19 04:54:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-19 04:54:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-19 04:54:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-19 04:54:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-19 04:54:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-19 04:54:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-19 04:54:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-19 04:54:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-19 04:54:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-19 04:54:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 04:54:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 04:54:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:54:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 04:54:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-19 04:54:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-19 04:54:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 04:54:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-19 04:54:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-19 04:54:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:54:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 04:54:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 04:54:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 04:54:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 04:54:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-19 04:54:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:54:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-19 04:54:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-19 04:54:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-19 04:54:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 04:54:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 04:54:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 04:54:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:54:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 04:54:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:54:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 04:54:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:54:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:54:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-19 04:54:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:54:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 04:54:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 04:54:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 04:54:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 04:54:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 04:54:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 04:54:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 04:54:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 04:54:15,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 04:54:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-19 04:54:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 04:54:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 04:54:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-19 04:54:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-19 04:54:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-19 04:54:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-19 04:54:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-19 04:54:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-19 04:54:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-19 04:54:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-19 04:54:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-19 04:54:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-19 04:54:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-19 04:54:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:54:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-19 04:54:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-19 04:54:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:54:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-19 04:54:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-19 04:54:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 04:54:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-19 04:54:15,261 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 04:54:15,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 04:54:15,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 04:54:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:54:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 04:54:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:54:15,993 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 04:54:16,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:54:16,828 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:54:16,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:54:16 BoogieIcfgContainer [2020-08-19 04:54:16,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:54:16,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:54:16,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:54:16,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:54:16,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:54:13" (1/3) ... [2020-08-19 04:54:16,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f68485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:54:16, skipping insertion in model container [2020-08-19 04:54:16,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:54:14" (2/3) ... [2020-08-19 04:54:16,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f68485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:54:16, skipping insertion in model container [2020-08-19 04:54:16,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:54:16" (3/3) ... [2020-08-19 04:54:16,856 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 04:54:16,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:54:16,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:54:16,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:54:16,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:54:16,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:54:16,932 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:54:16,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:54:16,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:54:16,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:54:16,933 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:54:16,933 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:54:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-19 04:54:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 04:54:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:16,999 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 04:54:16,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-19 04:54:17,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:17,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685134855] [2020-08-19 04:54:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,627 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-19 04:54:17,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:54:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 04:54:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:17,884 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 04:54:17,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685134855] [2020-08-19 04:54:17,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:17,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:54:17,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914666844] [2020-08-19 04:54:17,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:54:17,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:17,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:54:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:54:17,921 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-19 04:54:18,084 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 04:54:18,526 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-19 04:54:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:23,436 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-19 04:54:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:54:23,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-19 04:54:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:23,464 INFO L225 Difference]: With dead ends: 1386 [2020-08-19 04:54:23,465 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 04:54:23,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:54:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 04:54:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-19 04:54:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 04:54:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-19 04:54:23,666 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-19 04:54:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:23,670 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-19 04:54:23,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:54:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-19 04:54:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 04:54:23,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:23,675 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 04:54:23,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:54:23,676 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-19 04:54:23,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:23,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418681099] [2020-08-19 04:54:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:54:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:23,961 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 04:54:23,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418681099] [2020-08-19 04:54:23,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:23,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:54:23,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67576347] [2020-08-19 04:54:23,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:54:23,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:54:23,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:54:23,965 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-19 04:54:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:27,471 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-19 04:54:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:54:27,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 04:54:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:27,488 INFO L225 Difference]: With dead ends: 1673 [2020-08-19 04:54:27,489 INFO L226 Difference]: Without dead ends: 986 [2020-08-19 04:54:27,492 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 04:54:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-19 04:54:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-19 04:54:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 04:54:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-19 04:54:27,646 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-19 04:54:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:27,647 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-19 04:54:27,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:54:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-19 04:54:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:54:27,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:27,660 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 04:54:27,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:54:27,660 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:27,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:27,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-19 04:54:27,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:27,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702402218] [2020-08-19 04:54:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:54:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:54:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 04:54:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:28,262 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 04:54:28,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702402218] [2020-08-19 04:54:28,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:28,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:54:28,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142873840] [2020-08-19 04:54:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:54:28,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:54:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:54:28,264 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-19 04:54:34,215 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-19 04:54:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:34,646 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-19 04:54:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 04:54:34,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 04:54:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:34,662 INFO L225 Difference]: With dead ends: 2445 [2020-08-19 04:54:34,663 INFO L226 Difference]: Without dead ends: 1743 [2020-08-19 04:54:34,666 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 04:54:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-19 04:54:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-19 04:54:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-19 04:54:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-19 04:54:34,844 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-19 04:54:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:34,846 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-19 04:54:34,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:54:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-19 04:54:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:54:34,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:34,855 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 04:54:34,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:54:34,856 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:34,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-19 04:54:34,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:34,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959068121] [2020-08-19 04:54:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:54:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:54:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:54:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:54:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:54:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:35,443 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 04:54:35,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959068121] [2020-08-19 04:54:35,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:35,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:54:35,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529950978] [2020-08-19 04:54:35,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:54:35,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:35,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:54:35,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:54:35,448 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-19 04:54:35,586 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 04:54:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:40,672 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-19 04:54:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:54:40,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:54:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:40,693 INFO L225 Difference]: With dead ends: 4737 [2020-08-19 04:54:40,694 INFO L226 Difference]: Without dead ends: 3284 [2020-08-19 04:54:40,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 04:54:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-19 04:54:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-19 04:54:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-19 04:54:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-19 04:54:40,963 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-19 04:54:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:40,964 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-19 04:54:40,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:54:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-19 04:54:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:54:40,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:40,973 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 04:54:40,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:54:40,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:40,974 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-19 04:54:40,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:40,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733778647] [2020-08-19 04:54:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:54:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:54:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:54:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:54:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:54:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:54:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:41,432 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 04:54:41,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733778647] [2020-08-19 04:54:41,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:41,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:54:41,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374282166] [2020-08-19 04:54:41,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:54:41,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:54:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:54:41,436 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-19 04:54:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:45,034 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-19 04:54:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:54:45,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:54:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:45,044 INFO L225 Difference]: With dead ends: 4462 [2020-08-19 04:54:45,045 INFO L226 Difference]: Without dead ends: 1751 [2020-08-19 04:54:45,051 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 04:54:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-19 04:54:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-19 04:54:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-19 04:54:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-19 04:54:45,186 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-19 04:54:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:45,186 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-19 04:54:45,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:54:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-19 04:54:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:54:45,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:45,191 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 04:54:45,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:54:45,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-19 04:54:45,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:45,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290174758] [2020-08-19 04:54:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:54:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:54:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:54:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:54:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:54:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:45,689 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 04:54:45,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290174758] [2020-08-19 04:54:45,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:45,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:54:45,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093229306] [2020-08-19 04:54:45,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:54:45,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:45,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:54:45,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:54:45,692 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-19 04:54:45,818 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 04:54:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:48,320 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-19 04:54:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:54:48,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:54:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:48,334 INFO L225 Difference]: With dead ends: 2489 [2020-08-19 04:54:48,334 INFO L226 Difference]: Without dead ends: 1716 [2020-08-19 04:54:48,338 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 04:54:48,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-19 04:54:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-19 04:54:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-19 04:54:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-19 04:54:48,476 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-19 04:54:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:48,477 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-19 04:54:48,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:54:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-19 04:54:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 04:54:48,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:48,482 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 04:54:48,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:54:48,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-19 04:54:48,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:48,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50028367] [2020-08-19 04:54:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:54:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:54:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:54:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:48,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 04:54:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 04:54:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:49,078 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 04:54:49,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50028367] [2020-08-19 04:54:49,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:49,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 04:54:49,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971398564] [2020-08-19 04:54:49,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:54:49,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:54:49,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:54:49,081 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-19 04:54:51,005 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 04:54:52,189 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 04:54:52,398 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 04:54:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:54:56,274 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-19 04:54:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:54:56,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 04:54:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:54:56,290 INFO L225 Difference]: With dead ends: 3355 [2020-08-19 04:54:56,290 INFO L226 Difference]: Without dead ends: 1940 [2020-08-19 04:54:56,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:54:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-19 04:54:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-19 04:54:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-19 04:54:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-19 04:54:56,629 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-19 04:54:56,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:54:56,629 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-19 04:54:56,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:54:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-19 04:54:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-19 04:54:56,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:54:56,638 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 04:54:56,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:54:56,639 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:54:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:54:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-19 04:54:56,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:54:56,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470888831] [2020-08-19 04:54:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:54:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:54:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:54:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:54:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:54:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:54:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:54:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:54:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 04:54:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:54:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:54:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 04:54:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:54:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 04:54:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:54:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-19 04:54:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:54:57,927 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 04:54:57,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470888831] [2020-08-19 04:54:57,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:54:57,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 04:54:57,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739318314] [2020-08-19 04:54:57,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:54:57,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:54:57,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:54:57,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:54:57,930 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-19 04:54:58,059 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 04:54:58,390 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-19 04:54:58,704 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-19 04:55:00,595 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-19 04:55:01,963 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 04:55:02,186 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 04:55:06,320 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-08-19 04:55:06,928 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 04:55:07,157 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103