/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:56:24,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:56:24,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:56:24,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:56:24,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:56:24,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:56:24,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:56:24,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:56:24,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:56:24,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:56:24,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:56:24,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:56:24,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:56:24,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:56:24,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:56:24,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:56:24,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:56:24,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:56:24,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:56:24,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:56:24,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:56:24,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:56:24,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:56:24,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:56:24,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:56:24,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:56:24,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:56:24,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:56:24,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:56:24,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:56:24,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:56:24,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:56:24,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:56:24,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:56:24,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:56:24,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:56:24,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:56:24,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:56:24,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:56:24,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:56:24,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:56:24,752 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 [2020-08-22 01:56:24,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:56:24,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:56:24,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:56:24,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:56:24,799 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:56:24,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:56:24,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:56:24,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:56:24,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:56:24,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:56:24,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:56:24,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:56:24,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:56:24,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:56:24,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:56:24,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:56:24,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:56:24,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:56:24,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:56:24,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:56:24,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:56:24,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:56:24,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:56:24,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:56:24,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:56:24,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:56:24,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 01:56:24,806 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:56:25,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:56:25,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:56:25,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:56:25,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:56:25,113 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:56:25,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 01:56:25,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38591aa8c/8f6040d4e768478cbcb48c49c9c7717f/FLAG3cfe54fa9 [2020-08-22 01:56:26,026 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:56:26,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 01:56:26,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38591aa8c/8f6040d4e768478cbcb48c49c9c7717f/FLAG3cfe54fa9 [2020-08-22 01:56:26,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38591aa8c/8f6040d4e768478cbcb48c49c9c7717f [2020-08-22 01:56:26,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:56:26,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:56:26,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:56:26,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:56:26,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:56:26,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:56:26" (1/1) ... [2020-08-22 01:56:26,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fa554e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:26, skipping insertion in model container [2020-08-22 01:56:26,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:56:26" (1/1) ... [2020-08-22 01:56:26,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:56:26,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:56:28,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:56:28,057 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:56:28,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:56:28,555 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:56:28,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28 WrapperNode [2020-08-22 01:56:28,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:56:28,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:56:28,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:56:28,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:56:28,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (1/1) ... [2020-08-22 01:56:28,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:56:28,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:56:28,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:56:28,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:56:28,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (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 [2020-08-22 01:56:28,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:56:28,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:56:28,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 01:56:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 01:56:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-22 01:56:28,878 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-22 01:56:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-22 01:56:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-22 01:56:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-22 01:56:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-22 01:56:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-22 01:56:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-22 01:56:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-22 01:56:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-22 01:56:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 01:56:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-22 01:56:28,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 01:56:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 01:56:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 01:56:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-22 01:56:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-22 01:56:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-22 01:56:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-22 01:56:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-22 01:56:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-22 01:56:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-22 01:56:28,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-22 01:56:28,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-22 01:56:28,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-22 01:56:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-22 01:56:28,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-22 01:56:28,898 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-22 01:56:28,898 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-22 01:56:28,898 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-22 01:56:28,899 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-22 01:56:28,900 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-22 01:56:28,900 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-22 01:56:28,900 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-22 01:56:28,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-22 01:56:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-22 01:56:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-22 01:56:28,902 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-22 01:56:28,903 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-22 01:56:28,903 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 01:56:28,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 01:56:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:56:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 01:56:28,903 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-22 01:56:28,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:56:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-22 01:56:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-22 01:56:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-22 01:56:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:56:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-22 01:56:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-22 01:56:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-22 01:56:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-22 01:56:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-22 01:56:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-22 01:56:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:56:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 01:56:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:56:28,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 01:56:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 01:56:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 01:56:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-22 01:56:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:56:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 01:56:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 01:56:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 01:56:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 01:56:28,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 01:56:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 01:56:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 01:56:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 01:56:28,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 01:56:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 01:56:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-22 01:56:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-22 01:56:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-22 01:56:28,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-22 01:56:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-22 01:56:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-22 01:56:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-22 01:56:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-22 01:56:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-22 01:56:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-22 01:56:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-22 01:56:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-22 01:56:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-22 01:56:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-22 01:56:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-22 01:56:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-22 01:56:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-22 01:56:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-22 01:56:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 01:56:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:56:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 01:56:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:56:29,441 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 01:56:30,199 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:56:30,200 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 01:56:30,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:56:30 BoogieIcfgContainer [2020-08-22 01:56:30,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:56:30,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:56:30,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:56:30,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:56:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:56:26" (1/3) ... [2020-08-22 01:56:30,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614f07b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:56:30, skipping insertion in model container [2020-08-22 01:56:30,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:56:28" (2/3) ... [2020-08-22 01:56:30,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614f07b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:56:30, skipping insertion in model container [2020-08-22 01:56:30,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:56:30" (3/3) ... [2020-08-22 01:56:30,219 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 [2020-08-22 01:56:30,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:56:30,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:56:30,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:56:30,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:56:30,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:56:30,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:56:30,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:56:30,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:56:30,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:56:30,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:56:30,293 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:56:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-22 01:56:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 01:56:30,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:56:30,346 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] [2020-08-22 01:56:30,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:56:30,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:56:30,353 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-22 01:56:30,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:56:30,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522191760] [2020-08-22 01:56:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:56:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:30,877 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 01:56:30,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:56:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:56:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 01:56:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:56:31,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522191760] [2020-08-22 01:56:31,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:56:31,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:56:31,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434953566] [2020-08-22 01:56:31,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:56:31,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:56:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:56:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:56:31,125 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-22 01:56:31,259 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:56:31,833 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:56:33,610 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 01:56:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:56:37,235 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-22 01:56:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:56:37,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-22 01:56:37,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:56:37,264 INFO L225 Difference]: With dead ends: 1386 [2020-08-22 01:56:37,264 INFO L226 Difference]: Without dead ends: 987 [2020-08-22 01:56:37,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:56:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-22 01:56:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-22 01:56:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 01:56:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-22 01:56:37,469 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-22 01:56:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:56:37,469 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-22 01:56:37,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:56:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-22 01:56:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 01:56:37,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:56:37,474 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] [2020-08-22 01:56:37,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:56:37,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:56:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:56:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-22 01:56:37,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:56:37,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393775349] [2020-08-22 01:56:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:56:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,747 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 01:56:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:56:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:56:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:56:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:56:37,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393775349] [2020-08-22 01:56:37,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:56:37,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:56:37,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316192727] [2020-08-22 01:56:37,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:56:37,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:56:37,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:56:37,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:56:37,962 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-22 01:56:38,236 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:56:39,016 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-22 01:56:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:56:42,095 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-22 01:56:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:56:42,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-22 01:56:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:56:42,104 INFO L225 Difference]: With dead ends: 1673 [2020-08-22 01:56:42,104 INFO L226 Difference]: Without dead ends: 986 [2020-08-22 01:56:42,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:56:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-22 01:56:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-22 01:56:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 01:56:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-22 01:56:42,209 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-22 01:56:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:56:42,210 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-22 01:56:42,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:56:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-22 01:56:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:56:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:56:42,217 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] [2020-08-22 01:56:42,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:56:42,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:56:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:56:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-22 01:56:42,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:56:42,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965184795] [2020-08-22 01:56:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:56:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:56:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:56:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:56:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:56:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 01:56:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 01:56:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-22 01:56:42,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965184795] [2020-08-22 01:56:42,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:56:42,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:56:42,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594337644] [2020-08-22 01:56:42,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:56:42,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:56:42,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:56:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:56:42,792 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-22 01:56:42,909 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:56:43,080 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:56:43,337 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 01:56:47,672 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-22 01:56:49,959 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-22 01:56:50,093 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-22 01:56:50,223 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-22 01:56:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:56:50,471 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-22 01:56:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 01:56:50,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 01:56:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:56:50,487 INFO L225 Difference]: With dead ends: 2445 [2020-08-22 01:56:50,487 INFO L226 Difference]: Without dead ends: 1743 [2020-08-22 01:56:50,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:56:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-22 01:56:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-22 01:56:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-22 01:56:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-22 01:56:50,648 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-22 01:56:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:56:50,650 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-22 01:56:50,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:56:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-22 01:56:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 01:56:50,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:56:50,659 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] [2020-08-22 01:56:50,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:56:50,659 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:56:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:56:50,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-22 01:56:50,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:56:50,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056541382] [2020-08-22 01:56:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:56:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:56:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:56:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:56:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:56:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 01:56:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:56:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:56:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 01:56:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 01:56:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 01:56:51,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056541382] [2020-08-22 01:56:51,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:56:51,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:56:51,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548869533] [2020-08-22 01:56:51,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:56:51,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:56:51,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:56:51,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:56:51,262 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-22 01:56:51,377 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:56:52,608 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 01:56:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:56:57,212 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-22 01:56:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:56:57,213 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 01:56:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:56:57,233 INFO L225 Difference]: With dead ends: 4737 [2020-08-22 01:56:57,234 INFO L226 Difference]: Without dead ends: 3284 [2020-08-22 01:56:57,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:56:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-22 01:56:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-22 01:56:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-22 01:56:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-22 01:56:57,545 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-22 01:56:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:56:57,548 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-22 01:56:57,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:56:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-22 01:56:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 01:56:57,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:56:57,556 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] [2020-08-22 01:56:57,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:56:57,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:56:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:56:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-22 01:56:57,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:56:57,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049970951] [2020-08-22 01:56:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:56:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:56:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 01:56:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:56:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:56:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 01:56:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:56:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:56:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:56:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:56:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 01:56:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:56:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 01:56:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:56:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-22 01:56:58,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049970951] [2020-08-22 01:56:58,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:56:58,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:56:58,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249363742] [2020-08-22 01:56:58,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:56:58,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:56:58,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:56:58,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:56:58,056 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-22 01:56:58,209 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:56:58,373 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:56:58,533 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 01:57:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:57:02,381 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-22 01:57:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:57:02,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 01:57:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:57:02,392 INFO L225 Difference]: With dead ends: 4462 [2020-08-22 01:57:02,392 INFO L226 Difference]: Without dead ends: 1751 [2020-08-22 01:57:02,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:57:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-22 01:57:02,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-22 01:57:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-22 01:57:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-22 01:57:02,537 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-22 01:57:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:57:02,538 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-22 01:57:02,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:57:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-22 01:57:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 01:57:02,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:57:02,541 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] [2020-08-22 01:57:02,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:57:02,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:57:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:57:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-22 01:57:02,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:57:02,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558395197] [2020-08-22 01:57:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:57:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:57:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:57:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:57:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:57:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:57:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:57:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:57:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 01:57:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 01:57:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 01:57:03,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558395197] [2020-08-22 01:57:03,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:57:03,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 01:57:03,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854542145] [2020-08-22 01:57:03,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:57:03,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:57:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:57:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:57:03,040 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-22 01:57:03,153 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:57:04,439 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-22 01:57:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:57:06,251 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-22 01:57:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:57:06,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 01:57:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:57:06,266 INFO L225 Difference]: With dead ends: 2489 [2020-08-22 01:57:06,267 INFO L226 Difference]: Without dead ends: 1716 [2020-08-22 01:57:06,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:57:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-22 01:57:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-22 01:57:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-22 01:57:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-22 01:57:06,436 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-22 01:57:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:57:06,438 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-22 01:57:06,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:57:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-22 01:57:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 01:57:06,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:57:06,443 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] [2020-08-22 01:57:06,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:57:06,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:57:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:57:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-22 01:57:06,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:57:06,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066318217] [2020-08-22 01:57:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:57:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:57:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:57:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:57:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:57:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:57:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:57:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:57:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 01:57:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 01:57:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 01:57:07,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066318217] [2020-08-22 01:57:07,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:57:07,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 01:57:07,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014682843] [2020-08-22 01:57:07,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 01:57:07,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:57:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 01:57:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:57:07,102 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-22 01:57:07,384 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:57:09,335 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 01:57:10,759 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 01:57:11,028 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 01:57:11,202 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 01:57:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:57:15,891 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-22 01:57:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 01:57:15,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 01:57:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:57:15,914 INFO L225 Difference]: With dead ends: 3355 [2020-08-22 01:57:15,915 INFO L226 Difference]: Without dead ends: 1940 [2020-08-22 01:57:15,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-22 01:57:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-22 01:57:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-22 01:57:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-22 01:57:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-22 01:57:16,224 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-22 01:57:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:57:16,225 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-22 01:57:16,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 01:57:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-22 01:57:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 01:57:16,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:57:16,234 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] [2020-08-22 01:57:16,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:57:16,235 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:57:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:57:16,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-22 01:57:16,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:57:16,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857987950] [2020-08-22 01:57:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:57:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,672 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 01:57:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:57:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:57:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:57:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 01:57:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 01:57:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:57:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:57:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 01:57:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:57:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:57:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 01:57:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:57:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 01:57:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:57:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 01:57:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:57:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-22 01:57:17,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857987950] [2020-08-22 01:57:17,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:57:17,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 01:57:17,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938131558] [2020-08-22 01:57:17,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:57:17,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:57:17,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:57:17,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:57:17,794 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-22 01:57:17,974 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 01:57:18,424 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-22 01:57:18,870 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-22 01:57:20,829 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101