/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:27:33,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:27:33,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:27:33,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:27:33,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:27:33,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:27:33,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:27:33,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:27:33,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:27:33,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:27:33,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:27:33,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:27:33,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:27:33,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:27:33,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:27:33,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:27:33,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:27:33,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:27:33,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:27:33,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:27:33,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:27:33,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:27:33,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:27:33,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:27:33,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:27:33,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:27:33,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:27:33,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:27:33,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:27:33,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 13:27:33,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 13:27:33,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 13:27:33,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 13:27:33,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 13:27:33,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 13:27:33,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 13:27:33,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 13:27:33,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 13:27:33,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:27:33,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:27:33,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:27:33,600 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 [2020-08-18 13:27:33,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:27:33,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:27:33,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:27:33,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:27:33,625 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:27:33,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:27:33,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:27:33,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:27:33,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:27:33,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:27:33,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:27:33,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:27:33,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:27:33,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:27:33,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:27:33,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:27:33,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:27:33,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:27:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:27:33,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:27:33,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:27:33,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:27:33,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:27:33,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:27:33,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:27:33,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:27:33,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 13:27:33,629 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:27:33,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:27:33,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:27:33,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:27:33,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:27:33,936 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:27:33,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 13:27:34,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2a8a42f/2d3c6274488a43f686040252c7e20768/FLAG2420862f1 [2020-08-18 13:27:34,719 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:27:34,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 13:27:34,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2a8a42f/2d3c6274488a43f686040252c7e20768/FLAG2420862f1 [2020-08-18 13:27:34,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2a8a42f/2d3c6274488a43f686040252c7e20768 [2020-08-18 13:27:34,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:27:34,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:27:34,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:27:34,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:27:34,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:27:34,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:27:34" (1/1) ... [2020-08-18 13:27:34,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587f10d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:34, skipping insertion in model container [2020-08-18 13:27:34,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:27:34" (1/1) ... [2020-08-18 13:27:34,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:27:34,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:27:36,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:27:36,404 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:27:36,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:27:36,796 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:27:36,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36 WrapperNode [2020-08-18 13:27:36,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:27:36,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:27:36,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:27:36,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:27:36,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (1/1) ... [2020-08-18 13:27:36,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:27:36,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:27:36,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:27:36,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:27:36,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (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 [2020-08-18 13:27:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:27:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:27:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 13:27:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 13:27:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 13:27:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 13:27:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 13:27:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 13:27:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 13:27:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 13:27:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 13:27:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 13:27:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 13:27:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 13:27:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 13:27:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 13:27:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 13:27:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 13:27:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 13:27:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 13:27:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 13:27:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 13:27:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 13:27:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 13:27:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 13:27:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 13:27:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 13:27:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 13:27:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 13:27:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 13:27:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 13:27:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 13:27:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 13:27:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 13:27:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 13:27:37,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 13:27:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 13:27:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 13:27:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 13:27:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:27:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 13:27:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 13:27:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 13:27:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 13:27:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 13:27:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 13:27:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 13:27:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 13:27:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 13:27:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 13:27:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 13:27:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 13:27:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 13:27:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 13:27:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 13:27:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 13:27:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 13:27:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 13:27:37,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:27:37,757 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 13:27:38,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:27:38,688 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 13:27:38,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:27:38 BoogieIcfgContainer [2020-08-18 13:27:38,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:27:38,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:27:38,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:27:38,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:27:38,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:27:34" (1/3) ... [2020-08-18 13:27:38,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8e2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:27:38, skipping insertion in model container [2020-08-18 13:27:38,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:27:36" (2/3) ... [2020-08-18 13:27:38,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8e2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:27:38, skipping insertion in model container [2020-08-18 13:27:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:27:38" (3/3) ... [2020-08-18 13:27:38,711 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 [2020-08-18 13:27:38,724 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:27:38,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:27:38,754 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:27:38,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:27:38,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:27:38,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:27:38,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:27:38,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:27:38,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:27:38,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:27:38,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:27:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 13:27:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 13:27:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:27:38,851 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] [2020-08-18 13:27:38,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:27:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:27:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 13:27:38,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:27:38,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889548075] [2020-08-18 13:27:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:27:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,433 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 13:27:39,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:27:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 13:27:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 13:27:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:27:39,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889548075] [2020-08-18 13:27:39,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:27:39,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 13:27:39,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569371702] [2020-08-18 13:27:39,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 13:27:39,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:27:39,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 13:27:39,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 13:27:39,705 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 13:27:39,837 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:27:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:27:45,477 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 13:27:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:27:45,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 13:27:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:27:45,510 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 13:27:45,510 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 13:27:45,520 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 [2020-08-18 13:27:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 13:27:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 13:27:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 13:27:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 13:27:45,799 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 13:27:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:27:45,809 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 13:27:45,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 13:27:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 13:27:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 13:27:45,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:27:45,819 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] [2020-08-18 13:27:45,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:27:45,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:27:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:27:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 13:27:45,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:27:45,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313033136] [2020-08-18 13:27:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:27:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:27:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:27:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 13:27:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:27:46,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313033136] [2020-08-18 13:27:46,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:27:46,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 13:27:46,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434046599] [2020-08-18 13:27:46,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 13:27:46,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:27:46,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 13:27:46,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 13:27:46,157 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 13:27:46,459 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 13:27:47,239 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-18 13:27:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:27:50,177 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 13:27:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:27:50,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 13:27:50,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:27:50,186 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 13:27:50,186 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 13:27:50,190 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 [2020-08-18 13:27:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 13:27:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 13:27:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 13:27:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 13:27:50,274 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 13:27:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:27:50,274 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 13:27:50,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 13:27:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 13:27:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 13:27:50,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:27:50,280 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] [2020-08-18 13:27:50,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:27:50,280 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:27:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:27:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 13:27:50,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:27:50,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961805451] [2020-08-18 13:27:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:27:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,518 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 13:27:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:27:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:27:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 13:27:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:27:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 13:27:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 13:27:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-18 13:27:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961805451] [2020-08-18 13:27:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:27:50,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 13:27:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102933248] [2020-08-18 13:27:50,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:27:50,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:27:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:27:50,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:27:50,826 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 13:27:50,973 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:27:51,278 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-18 13:27:55,581 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-18 13:27:57,557 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 13:27:57,690 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-18 13:27:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:27:58,032 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 13:27:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 13:27:58,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 13:27:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:27:58,049 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 13:27:58,050 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 13:27:58,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 13:27:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 13:27:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 13:27:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 13:27:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 13:27:58,190 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 13:27:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:27:58,190 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 13:27:58,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:27:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 13:27:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:27:58,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:27:58,198 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] [2020-08-18 13:27:58,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:27:58,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:27:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:27:58,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 13:27:58,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:27:58,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530640419] [2020-08-18 13:27:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:27:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:27:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:27:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 13:27:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:27:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:27:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 13:27:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:27:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:27:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:27:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 13:27:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:27:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 13:27:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:27:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-18 13:27:58,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530640419] [2020-08-18 13:27:58,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:27:58,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:27:58,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34834927] [2020-08-18 13:27:58,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:27:58,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:27:58,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:27:58,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:27:58,826 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 13:27:58,966 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:28:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:04,887 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 13:28:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:28:04,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 13:28:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:04,911 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 13:28:04,911 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 13:28:04,919 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 [2020-08-18 13:28:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 13:28:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 13:28:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 13:28:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 13:28:05,191 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 13:28:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:05,193 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 13:28:05,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:28:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 13:28:05,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:28:05,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:05,202 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] [2020-08-18 13:28:05,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:28:05,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 13:28:05,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:05,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299885491] [2020-08-18 13:28:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 13:28:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:28:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 13:28:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 13:28:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 13:28:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 13:28:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 13:28:05,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299885491] [2020-08-18 13:28:05,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:05,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:28:05,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159528684] [2020-08-18 13:28:05,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:28:05,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:05,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:28:05,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:28:05,709 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 13:28:05,833 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:28:06,000 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 13:28:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:09,558 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 13:28:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 13:28:09,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 13:28:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:09,574 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 13:28:09,574 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 13:28:09,581 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 [2020-08-18 13:28:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 13:28:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 13:28:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 13:28:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 13:28:09,710 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 13:28:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:09,710 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 13:28:09,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:28:09,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 13:28:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 13:28:09,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:09,715 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] [2020-08-18 13:28:09,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:28:09,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 13:28:09,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172436414] [2020-08-18 13:28:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:28:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 13:28:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 13:28:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:28:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 13:28:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 13:28:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 13:28:10,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172436414] [2020-08-18 13:28:10,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:10,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 13:28:10,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692728242] [2020-08-18 13:28:10,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 13:28:10,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 13:28:10,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:28:10,221 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 13:28:10,367 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:28:11,588 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-18 13:28:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:13,194 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 13:28:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:28:13,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 13:28:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:13,207 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 13:28:13,208 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 13:28:13,211 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 [2020-08-18 13:28:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 13:28:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 13:28:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 13:28:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 13:28:13,357 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 13:28:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:13,357 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 13:28:13,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 13:28:13,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 13:28:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 13:28:13,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:13,362 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] [2020-08-18 13:28:13,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:28:13,363 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:13,364 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 13:28:13,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:13,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474683515] [2020-08-18 13:28:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:28:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 13:28:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 13:28:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:28:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 13:28:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 13:28:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 13:28:13,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474683515] [2020-08-18 13:28:13,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:13,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 13:28:13,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484611140] [2020-08-18 13:28:13,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 13:28:13,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:13,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 13:28:13,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:28:13,969 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 13:28:14,080 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:28:16,076 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 13:28:17,363 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 13:28:17,590 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 13:28:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:28:21,972 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 13:28:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 13:28:21,973 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 13:28:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:28:21,987 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 13:28:21,987 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 13:28:21,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-18 13:28:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 13:28:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 13:28:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 13:28:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 13:28:22,217 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 13:28:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:28:22,219 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 13:28:22,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 13:28:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 13:28:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 13:28:22,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:28:22,229 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] [2020-08-18 13:28:22,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:28:22,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:28:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:28:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 13:28:22,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:28:22,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670665570] [2020-08-18 13:28:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:28:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,585 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 13:28:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 13:28:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 13:28:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 13:28:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 13:28:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 13:28:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 13:28:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 13:28:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 13:28:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 13:28:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 13:28:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 13:28:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 13:28:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 13:28:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:28:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 13:28:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:28:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-18 13:28:23,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670665570] [2020-08-18 13:28:23,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:28:23,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 13:28:23,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710774032] [2020-08-18 13:28:23,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 13:28:23,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:28:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 13:28:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 13:28:23,668 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 13:28:23,837 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 13:28:24,265 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 13:28:24,764 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 13:28:26,514 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 13:28:28,057 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 13:28:28,305 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 13:28:28,521 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99