/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:59:16,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:59:16,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:59:16,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:59:16,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:59:16,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:59:16,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:59:16,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:59:16,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:59:16,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:59:16,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:59:16,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:59:16,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:59:16,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:59:16,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:59:16,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:59:16,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:59:16,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:59:16,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:59:16,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:59:16,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:59:16,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:59:16,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:59:16,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:59:16,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:59:16,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:59:16,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:59:16,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:59:16,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:59:16,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:59:16,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:59:16,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:59:16,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:59:16,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:59:16,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:59:16,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:59:16,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:59:16,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:59:16,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:59:16,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:59:16,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:59:16,847 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 15:59:16,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:59:16,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:59:16,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:59:16,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:59:16,872 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:59:16,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:59:16,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:59:16,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:59:16,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:59:16,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:59:16,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:59:16,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:59:16,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:59:16,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:59:16,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:59:16,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:59:16,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:59:16,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:59:16,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:59:16,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:59:16,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:59:16,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:59:16,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:59:16,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:59:16,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:59:16,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:59:16,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 15:59:16,877 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:59:17,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:59:17,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:59:17,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:59:17,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:59:17,216 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:59:17,217 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 15:59:17,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c4082fc5/75ea0c80e8fe4276896796e76bb79a3e/FLAGa6bb5a7e2 [2020-08-18 15:59:18,130 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:59:18,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 15:59:18,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c4082fc5/75ea0c80e8fe4276896796e76bb79a3e/FLAGa6bb5a7e2 [2020-08-18 15:59:18,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c4082fc5/75ea0c80e8fe4276896796e76bb79a3e [2020-08-18 15:59:18,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:59:18,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:59:18,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:59:18,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:59:18,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:59:18,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:59:18" (1/1) ... [2020-08-18 15:59:18,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1606a0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:18, skipping insertion in model container [2020-08-18 15:59:18,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:59:18" (1/1) ... [2020-08-18 15:59:18,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:59:18,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:59:20,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:59:20,144 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:59:20,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:59:20,566 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:59:20,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20 WrapperNode [2020-08-18 15:59:20,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:59:20,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:59:20,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:59:20,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:59:20,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (1/1) ... [2020-08-18 15:59:20,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:59:20,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:59:20,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:59:20,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:59:20,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (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 15:59:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 15:59:20,840 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 15:59:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 15:59:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 15:59:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 15:59:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 15:59:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 15:59:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 15:59:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 15:59:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 15:59:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 15:59:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 15:59:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 15:59:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 15:59:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 15:59:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 15:59:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 15:59:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 15:59:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 15:59:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 15:59:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 15:59:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 15:59:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 15:59:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 15:59:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 15:59:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 15:59:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 15:59:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 15:59:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 15:59:20,847 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 15:59:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 15:59:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 15:59:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 15:59:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 15:59:20,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 15:59:20,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 15:59:20,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 15:59:20,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 15:59:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 15:59:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 15:59:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 15:59:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 15:59:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:59:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 15:59:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 15:59:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 15:59:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 15:59:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 15:59:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 15:59:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:59:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 15:59:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 15:59:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 15:59:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 15:59:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 15:59:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 15:59:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:59:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 15:59:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:59:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 15:59:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:59:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 15:59:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 15:59:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:59:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 15:59:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 15:59:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 15:59:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 15:59:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 15:59:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 15:59:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 15:59:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 15:59:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 15:59:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 15:59:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 15:59:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 15:59:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 15:59:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 15:59:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 15:59:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 15:59:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 15:59:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 15:59:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 15:59:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 15:59:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 15:59:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 15:59:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 15:59:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 15:59:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:59:21,477 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 15:59:22,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:59:22,233 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 15:59:22,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:59:22 BoogieIcfgContainer [2020-08-18 15:59:22,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:59:22,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:59:22,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:59:22,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:59:22,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:59:18" (1/3) ... [2020-08-18 15:59:22,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ade88fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:59:22, skipping insertion in model container [2020-08-18 15:59:22,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:59:20" (2/3) ... [2020-08-18 15:59:22,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ade88fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:59:22, skipping insertion in model container [2020-08-18 15:59:22,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:59:22" (3/3) ... [2020-08-18 15:59:22,248 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 15:59:22,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:59:22,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:59:22,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:59:22,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:59:22,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:59:22,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:59:22,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:59:22,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:59:22,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:59:22,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:59:22,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:59:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 15:59:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 15:59:22,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:22,359 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 15:59:22,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 15:59:22,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:22,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539030840] [2020-08-18 15:59:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,038 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 15:59:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:59:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 15:59:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:23,191 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 15:59:23,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539030840] [2020-08-18 15:59:23,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:23,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:59:23,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217845772] [2020-08-18 15:59:23,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:59:23,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:23,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:59:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:59:23,218 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 15:59:23,355 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 15:59:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:28,247 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 15:59:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:59:28,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 15:59:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:28,277 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 15:59:28,277 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 15:59:28,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:59:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 15:59:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 15:59:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 15:59:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 15:59:28,487 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 15:59:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:28,487 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 15:59:28,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:59:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 15:59:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 15:59:28,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:28,493 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 15:59:28,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:59:28,493 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:28,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 15:59:28,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:28,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925511440] [2020-08-18 15:59:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:59:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:59:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:59:28,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925511440] [2020-08-18 15:59:28,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:28,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:59:28,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714922951] [2020-08-18 15:59:28,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:59:28,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:59:28,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:59:28,891 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 15:59:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:32,266 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 15:59:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:59:32,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 15:59:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:32,281 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 15:59:32,281 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 15:59:32,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:59:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 15:59:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 15:59:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 15:59:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 15:59:32,415 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 15:59:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:32,416 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 15:59:32,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:59:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 15:59:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 15:59:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:32,426 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 15:59:32,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:59:32,427 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:32,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:32,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 15:59:32,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:32,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124555969] [2020-08-18 15:59:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:59:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:59:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:59:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 15:59:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:33,107 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 15:59:33,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124555969] [2020-08-18 15:59:33,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:33,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 15:59:33,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995325131] [2020-08-18 15:59:33,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:59:33,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:59:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:59:33,110 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 15:59:38,635 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 15:59:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:39,059 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 15:59:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 15:59:39,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 15:59:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:39,075 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 15:59:39,075 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 15:59:39,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:59:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 15:59:39,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 15:59:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 15:59:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 15:59:39,331 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 15:59:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:39,332 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 15:59:39,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:59:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 15:59:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 15:59:39,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:39,343 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 15:59:39,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:59:39,343 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:39,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 15:59:39,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:39,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565623642] [2020-08-18 15:59:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:59:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:59:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:59:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:59:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 15:59:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:59:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:39,973 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 15:59:39,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565623642] [2020-08-18 15:59:39,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:39,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:59:39,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93468112] [2020-08-18 15:59:39,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:59:39,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:39,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:59:39,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:59:39,980 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 15:59:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:44,920 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 15:59:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:59:44,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 15:59:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:44,945 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 15:59:44,946 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 15:59:44,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:59:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 15:59:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 15:59:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 15:59:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 15:59:45,197 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 15:59:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:45,198 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 15:59:45,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:59:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 15:59:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 15:59:45,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:45,206 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 15:59:45,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:59:45,207 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:45,207 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 15:59:45,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:45,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037974326] [2020-08-18 15:59:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:59:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:59:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 15:59:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:59:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 15:59:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:59:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:45,738 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 15:59:45,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037974326] [2020-08-18 15:59:45,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:45,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:59:45,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914943715] [2020-08-18 15:59:45,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:59:45,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:59:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:59:45,742 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 15:59:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:49,379 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 15:59:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:59:49,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 15:59:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:49,393 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 15:59:49,393 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 15:59:49,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:59:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 15:59:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 15:59:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 15:59:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 15:59:49,640 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 15:59:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:49,641 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 15:59:49,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:59:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 15:59:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 15:59:49,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:49,645 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 15:59:49,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:59:49,646 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:49,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 15:59:49,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:49,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081185192] [2020-08-18 15:59:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:59:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:59:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:49,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:59:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:59:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 15:59:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:59:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:50,173 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 15:59:50,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081185192] [2020-08-18 15:59:50,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:50,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 15:59:50,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830148047] [2020-08-18 15:59:50,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:59:50,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:59:50,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:59:50,176 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 15:59:50,294 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 15:59:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:59:52,837 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 15:59:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:59:52,842 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 15:59:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:59:52,851 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 15:59:52,851 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 15:59:52,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:59:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 15:59:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 15:59:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 15:59:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 15:59:52,994 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 15:59:52,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:59:52,995 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 15:59:52,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:59:52,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 15:59:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 15:59:52,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:59:53,000 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 15:59:53,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:59:53,000 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:59:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:59:53,001 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 15:59:53,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:59:53,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308216403] [2020-08-18 15:59:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:59:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:59:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:59:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:59:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:59:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:59:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 15:59:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:59:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:59:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 15:59:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:59:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 15:59:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:59:53,561 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 15:59:53,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308216403] [2020-08-18 15:59:53,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:59:53,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 15:59:53,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913866474] [2020-08-18 15:59:53,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:59:53,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:59:53,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:59:53,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:59:53,564 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 15:59:53,827 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 15:59:55,424 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 15:59:56,581 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 15:59:56,787 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 16:00:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:00:00,382 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 16:00:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:00:00,382 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 16:00:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:00:00,398 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 16:00:00,399 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 16:00:00,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:00:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 16:00:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 16:00:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 16:00:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 16:00:00,539 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 16:00:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:00:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 16:00:00,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:00:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 16:00:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 16:00:00,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:00:00,545 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 16:00:00,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:00:00,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:00:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:00:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 16:00:00,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:00:00,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247675827] [2020-08-18 16:00:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:00:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:00:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:00:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:00:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:00:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:00:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:00:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:00:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:00:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:00:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 16:00:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:00:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:00:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:00:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:00:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 16:00:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:00:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:00:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 16:00:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:00:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 16:00:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:00:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 16:00:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:00:01,446 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 16:00:01,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247675827] [2020-08-18 16:00:01,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:00:01,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 16:00:01,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428299629] [2020-08-18 16:00:01,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:00:01,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:00:01,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:00:01,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:00:01,449 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 16:00:01,815 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 16:00:02,013 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 16:00:03,724 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 16:00:05,066 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 16:00:05,278 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 16:00:09,953 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 16:00:10,161 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-08-18 16:00:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:00:13,713 INFO L93 Difference]: Finished difference Result 3441 states and 4458 transitions. [2020-08-18 16:00:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 16:00:13,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2020-08-18 16:00:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:00:13,732 INFO L225 Difference]: With dead ends: 3441 [2020-08-18 16:00:13,732 INFO L226 Difference]: Without dead ends: 2674 [2020-08-18 16:00:13,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 16:00:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states.