/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 17:51:12,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:51:12,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:51:12,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:51:12,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:51:12,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:51:12,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:51:12,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:51:12,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:51:12,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:51:12,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:51:12,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:51:12,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:51:12,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:51:12,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:51:12,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:51:12,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:51:12,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:51:12,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:51:12,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:51:12,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:51:12,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:51:12,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:51:12,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:51:12,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:51:12,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:51:12,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:51:12,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:51:12,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:51:12,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:51:12,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:51:12,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:51:12,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:51:12,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:51:12,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:51:12,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:51:12,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:51:12,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:51:12,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:51:12,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:51:12,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:51:12,194 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 [2020-08-21 17:51:12,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:51:12,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:51:12,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:51:12,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:51:12,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:51:12,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:51:12,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:51:12,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:51:12,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:51:12,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:51:12,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:51:12,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:51:12,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:51:12,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:51:12,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:51:12,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:51:12,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:51:12,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:51:12,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:51:12,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:51:12,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:51:12,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 17:51:12,238 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:51:12,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:51:12,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:51:12,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:51:12,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:51:12,531 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:51:12,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 17:51:12,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea98492de/4c4ab6bd640243d6a0a6b1faea8a9c1f/FLAG8ba03c30c [2020-08-21 17:51:13,488 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:51:13,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 17:51:13,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea98492de/4c4ab6bd640243d6a0a6b1faea8a9c1f/FLAG8ba03c30c [2020-08-21 17:51:13,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea98492de/4c4ab6bd640243d6a0a6b1faea8a9c1f [2020-08-21 17:51:13,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:51:13,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:51:13,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:51:13,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:51:13,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:51:13,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:51:13" (1/1) ... [2020-08-21 17:51:13,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f39ff7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:13, skipping insertion in model container [2020-08-21 17:51:13,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:51:13" (1/1) ... [2020-08-21 17:51:14,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:51:14,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:51:15,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:51:15,600 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:51:15,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:51:15,856 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:51:15,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15 WrapperNode [2020-08-21 17:51:15,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:51:15,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:51:15,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:51:15,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:51:15,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (1/1) ... [2020-08-21 17:51:15,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:51:15,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:51:15,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:51:15,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:51:15,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (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 [2020-08-21 17:51:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:51:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:51:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 17:51:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 17:51:16,206 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-21 17:51:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 17:51:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 17:51:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 17:51:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-21 17:51:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-21 17:51:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 17:51:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-21 17:51:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-21 17:51:16,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-21 17:51:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:51:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-21 17:51:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 17:51:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 17:51:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 17:51:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 17:51:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 17:51:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 17:51:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 17:51:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 17:51:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 17:51:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 17:51:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-21 17:51:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-21 17:51:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-21 17:51:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-21 17:51:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-21 17:51:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-21 17:51:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-21 17:51:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-21 17:51:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-21 17:51:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-21 17:51:16,224 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-21 17:51:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-21 17:51:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-21 17:51:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-21 17:51:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-21 17:51:16,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 17:51:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:51:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 17:51:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 17:51:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 17:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 17:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 17:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-21 17:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-21 17:51:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-21 17:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 17:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 17:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 17:51:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 17:51:16,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 17:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 17:51:16,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 17:51:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 17:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 17:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 17:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 17:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 17:51:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 17:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 17:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 17:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 17:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 17:51:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 17:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-21 17:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-21 17:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-21 17:51:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-21 17:51:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-21 17:51:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-21 17:51:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-21 17:51:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-21 17:51:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-21 17:51:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-21 17:51:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-21 17:51:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-21 17:51:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-21 17:51:16,242 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 17:51:16,242 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 17:51:16,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 17:51:16,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 17:51:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-21 17:51:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 17:51:16,244 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 17:51:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:51:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 17:51:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-21 17:51:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-21 17:51:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 17:51:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:51:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-21 17:51:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 17:51:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 17:51:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 17:51:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:51:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 17:51:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-21 17:51:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-21 17:51:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:51:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 17:51:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 17:51:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 17:51:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 17:51:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-21 17:51:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:51:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-21 17:51:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-21 17:51:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-21 17:51:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 17:51:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 17:51:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 17:51:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:51:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 17:51:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:51:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 17:51:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:51:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:51:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-21 17:51:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:51:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 17:51:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 17:51:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 17:51:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 17:51:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 17:51:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 17:51:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 17:51:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 17:51:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 17:51:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 17:51:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 17:51:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 17:51:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-21 17:51:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-21 17:51:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-21 17:51:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-21 17:51:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:51:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-21 17:51:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-21 17:51:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-21 17:51:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-21 17:51:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-21 17:51:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-21 17:51:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-21 17:51:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 17:51:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 17:51:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 17:51:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:51:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 17:51:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:51:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 17:51:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:51:16,983 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 17:51:18,027 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:51:18,028 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 17:51:18,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:51:18 BoogieIcfgContainer [2020-08-21 17:51:18,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:51:18,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:51:18,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:51:18,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:51:18,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:51:13" (1/3) ... [2020-08-21 17:51:18,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a5a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:51:18, skipping insertion in model container [2020-08-21 17:51:18,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:51:15" (2/3) ... [2020-08-21 17:51:18,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9a5a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:51:18, skipping insertion in model container [2020-08-21 17:51:18,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:51:18" (3/3) ... [2020-08-21 17:51:18,045 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 [2020-08-21 17:51:18,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:51:18,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:51:18,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:51:18,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:51:18,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:51:18,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:51:18,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:51:18,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:51:18,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:51:18,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:51:18,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:51:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-21 17:51:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 17:51:18,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:18,152 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] [2020-08-21 17:51:18,152 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-21 17:51:18,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:18,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497837154] [2020-08-21 17:51:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,751 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 17:51:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:51:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 17:51:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:51:18,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497837154] [2020-08-21 17:51:18,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:18,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:51:18,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228428850] [2020-08-21 17:51:18,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:51:18,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:19,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:51:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:51:19,013 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-21 17:51:19,561 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 17:51:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:24,691 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-21 17:51:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:51:24,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-21 17:51:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:24,718 INFO L225 Difference]: With dead ends: 1386 [2020-08-21 17:51:24,718 INFO L226 Difference]: Without dead ends: 987 [2020-08-21 17:51:24,728 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 [2020-08-21 17:51:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-21 17:51:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-21 17:51:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 17:51:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-21 17:51:24,909 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-21 17:51:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:24,910 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-21 17:51:24,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:51:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-21 17:51:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:51:24,915 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:24,915 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] [2020-08-21 17:51:24,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:51:24,916 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-21 17:51:24,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:24,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104114821] [2020-08-21 17:51:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,176 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 17:51:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:51:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:51:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:51:25,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104114821] [2020-08-21 17:51:25,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:25,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:51:25,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110721750] [2020-08-21 17:51:25,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:51:25,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:25,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:51:25,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:51:25,423 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-21 17:51:26,594 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 17:51:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:29,493 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-21 17:51:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:51:29,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 17:51:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:29,502 INFO L225 Difference]: With dead ends: 1673 [2020-08-21 17:51:29,503 INFO L226 Difference]: Without dead ends: 986 [2020-08-21 17:51:29,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:51:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-21 17:51:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-21 17:51:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 17:51:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-21 17:51:29,628 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-21 17:51:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:29,629 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-21 17:51:29,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:51:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-21 17:51:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 17:51:29,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:29,640 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] [2020-08-21 17:51:29,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:51:29,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:29,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-21 17:51:29,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:29,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344064597] [2020-08-21 17:51:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:29,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:51:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:51:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 17:51:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 17:51:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 17:51:30,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344064597] [2020-08-21 17:51:30,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:30,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:51:30,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204832763] [2020-08-21 17:51:30,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:51:30,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:30,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:51:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:51:30,356 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-21 17:51:34,972 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-21 17:51:37,063 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-21 17:51:37,202 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 17:51:37,319 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 17:51:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:37,570 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-21 17:51:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 17:51:37,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 17:51:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:37,583 INFO L225 Difference]: With dead ends: 2445 [2020-08-21 17:51:37,583 INFO L226 Difference]: Without dead ends: 1743 [2020-08-21 17:51:37,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:51:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-21 17:51:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-21 17:51:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-21 17:51:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-21 17:51:37,776 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-21 17:51:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:37,779 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-21 17:51:37,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:51:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-21 17:51:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 17:51:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:37,792 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] [2020-08-21 17:51:37,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:51:37,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-21 17:51:37,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:37,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691094011] [2020-08-21 17:51:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:51:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:51:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 17:51:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:51:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 17:51:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 17:51:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 17:51:38,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691094011] [2020-08-21 17:51:38,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:38,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:51:38,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962690389] [2020-08-21 17:51:38,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:51:38,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:38,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:51:38,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:51:38,519 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-21 17:51:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:44,407 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-21 17:51:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:51:44,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 17:51:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:44,432 INFO L225 Difference]: With dead ends: 4737 [2020-08-21 17:51:44,432 INFO L226 Difference]: Without dead ends: 3284 [2020-08-21 17:51:44,438 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 [2020-08-21 17:51:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-21 17:51:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-21 17:51:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-21 17:51:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-21 17:51:44,712 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-21 17:51:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:44,714 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-21 17:51:44,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:51:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-21 17:51:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 17:51:44,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:44,725 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] [2020-08-21 17:51:44,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:51:44,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:44,726 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-21 17:51:44,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:44,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87277280] [2020-08-21 17:51:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:51:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:51:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:51:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:51:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 17:51:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 17:51:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 17:51:45,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87277280] [2020-08-21 17:51:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:45,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:51:45,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840873052] [2020-08-21 17:51:45,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:51:45,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:45,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:51:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:51:45,233 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-21 17:51:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:49,108 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-21 17:51:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:51:49,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 17:51:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:49,127 INFO L225 Difference]: With dead ends: 4462 [2020-08-21 17:51:49,127 INFO L226 Difference]: Without dead ends: 1751 [2020-08-21 17:51:49,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:51:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-21 17:51:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-21 17:51:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-21 17:51:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-21 17:51:49,296 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-21 17:51:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:49,296 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-21 17:51:49,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:51:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-21 17:51:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 17:51:49,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:49,303 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] [2020-08-21 17:51:49,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:51:49,304 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-21 17:51:49,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:49,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909651724] [2020-08-21 17:51:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,565 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 17:51:49,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:51:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:51:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:51:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:51:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 17:51:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 17:51:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 17:51:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909651724] [2020-08-21 17:51:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:51:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104903279] [2020-08-21 17:51:49,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:51:49,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:51:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:51:49,992 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-21 17:51:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:51:52,701 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-21 17:51:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:51:52,706 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 17:51:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:51:52,716 INFO L225 Difference]: With dead ends: 2489 [2020-08-21 17:51:52,716 INFO L226 Difference]: Without dead ends: 1716 [2020-08-21 17:51:52,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:51:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-21 17:51:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-21 17:51:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-21 17:51:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-21 17:51:52,897 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-21 17:51:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:51:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-21 17:51:52,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:51:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-21 17:51:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 17:51:52,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:51:52,904 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] [2020-08-21 17:51:52,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:51:52,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:51:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:51:52,905 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-21 17:51:52,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:51:52,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59660502] [2020-08-21 17:51:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:51:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:51:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:51:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:51:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:51:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:51:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:51:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:51:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:51:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 17:51:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:51:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 17:51:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:51:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 17:51:53,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59660502] [2020-08-21 17:51:53,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:51:53,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 17:51:53,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726012436] [2020-08-21 17:51:53,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:51:53,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:51:53,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:51:53,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:51:53,482 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-21 17:51:55,544 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-21 17:51:56,937 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 17:51:57,186 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-21 17:51:57,358 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 17:52:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:52:01,825 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-21 17:52:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 17:52:01,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 17:52:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:52:01,851 INFO L225 Difference]: With dead ends: 3355 [2020-08-21 17:52:01,851 INFO L226 Difference]: Without dead ends: 1940 [2020-08-21 17:52:01,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-21 17:52:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-21 17:52:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-21 17:52:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-21 17:52:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-21 17:52:02,101 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-21 17:52:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:52:02,102 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-21 17:52:02,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:52:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-21 17:52:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-21 17:52:02,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:52:02,111 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] [2020-08-21 17:52:02,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:52:02,112 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:52:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:52:02,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-21 17:52:02,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:52:02,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958476349] [2020-08-21 17:52:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:52:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,519 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 17:52:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 17:52:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:52:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:52:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 17:52:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:52:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 17:52:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:52:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 17:52:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:52:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:52:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 17:52:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:52:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-21 17:52:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:52:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-21 17:52:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:52:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-21 17:52:03,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958476349] [2020-08-21 17:52:03,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:52:03,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 17:52:03,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304367612] [2020-08-21 17:52:03,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 17:52:03,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:52:03,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 17:52:03,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:52:03,603 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-21 17:52:03,779 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 17:52:04,214 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-21 17:52:04,650 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-21 17:52:06,545 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101