/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:40:11,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:40:11,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:40:11,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:40:11,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:40:11,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:40:11,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:40:11,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:40:11,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:40:11,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:40:11,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:40:11,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:40:11,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:40:11,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:40:11,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:40:11,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:40:11,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:40:11,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:40:11,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:40:11,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:40:11,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:40:11,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:40:11,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:40:11,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:40:11,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:40:11,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:40:11,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:40:11,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:40:11,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:40:11,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:40:11,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:40:11,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:40:11,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:40:11,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:40:11,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:40:11,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:40:11,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:40:11,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:40:11,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:40:11,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:40:11,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:40:11,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 01:40:11,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:40:11,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:40:11,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:40:11,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:40:11,644 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:40:11,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:40:11,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:40:11,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:40:11,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:40:11,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:40:11,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:40:11,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:40:11,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:40:11,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:40:11,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:40:11,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:40:11,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:40:11,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:40:11,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:40:11,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:40:11,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:40:11,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:40:11,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:40:11,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:40:11,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:40:11,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:40:11,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 01:40:11,648 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:40:11,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:40:11,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:40:11,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:40:11,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:40:11,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:40:11,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 01:40:12,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8244e99/73b6441c6dbd411fa47e506821c5f4a6/FLAGc2776afa0 [2020-08-19 01:40:12,939 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:40:12,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 01:40:12,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8244e99/73b6441c6dbd411fa47e506821c5f4a6/FLAGc2776afa0 [2020-08-19 01:40:13,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d8244e99/73b6441c6dbd411fa47e506821c5f4a6 [2020-08-19 01:40:13,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:40:13,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:40:13,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:13,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:40:13,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:40:13,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:13" (1/1) ... [2020-08-19 01:40:13,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fd4afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:13, skipping insertion in model container [2020-08-19 01:40:13,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:40:13" (1/1) ... [2020-08-19 01:40:13,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:40:13,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:40:15,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:15,054 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:40:15,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:40:15,543 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:40:15,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15 WrapperNode [2020-08-19 01:40:15,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:40:15,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:40:15,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:40:15,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:40:15,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... [2020-08-19 01:40:15,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:40:15,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:40:15,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:40:15,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:40:15,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:40:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:40:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:40:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 01:40:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 01:40:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-19 01:40:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 01:40:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 01:40:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 01:40:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-19 01:40:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-19 01:40:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 01:40:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-19 01:40:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-19 01:40:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-19 01:40:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:40:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-19 01:40:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 01:40:15,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 01:40:15,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 01:40:15,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 01:40:15,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 01:40:15,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-19 01:40:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-19 01:40:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-19 01:40:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-19 01:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-19 01:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-19 01:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-19 01:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-19 01:40:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 01:40:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 01:40:15,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 01:40:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 01:40:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 01:40:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 01:40:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 01:40:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 01:40:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-19 01:40:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-19 01:40:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 01:40:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 01:40:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-19 01:40:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 01:40:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 01:40:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:40:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 01:40:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-19 01:40:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 01:40:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 01:40:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-19 01:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-19 01:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 01:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 01:40:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 01:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 01:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-19 01:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:40:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-19 01:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-19 01:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-19 01:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 01:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 01:40:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 01:40:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:40:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:40:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:40:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 01:40:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:40:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:40:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-19 01:40:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:40:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 01:40:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 01:40:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 01:40:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 01:40:15,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 01:40:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 01:40:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-19 01:40:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-19 01:40:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-19 01:40:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-19 01:40:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-19 01:40:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-19 01:40:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-19 01:40:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-19 01:40:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-19 01:40:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-19 01:40:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-19 01:40:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-19 01:40:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-19 01:40:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-19 01:40:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-19 01:40:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 01:40:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 01:40:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 01:40:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:40:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:40:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:40:16,487 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 01:40:17,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:40:17,244 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 01:40:17,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:17 BoogieIcfgContainer [2020-08-19 01:40:17,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:40:17,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:40:17,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:40:17,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:40:17,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:40:13" (1/3) ... [2020-08-19 01:40:17,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbe4e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:17, skipping insertion in model container [2020-08-19 01:40:17,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:40:15" (2/3) ... [2020-08-19 01:40:17,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbe4e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:40:17, skipping insertion in model container [2020-08-19 01:40:17,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:40:17" (3/3) ... [2020-08-19 01:40:17,259 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 01:40:17,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:40:17,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:40:17,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:40:17,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:40:17,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:40:17,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:40:17,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:40:17,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:40:17,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:40:17,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:40:17,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:40:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-19 01:40:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 01:40:17,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:17,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:17,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:17,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:17,372 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-19 01:40:17,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:17,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155830785] [2020-08-19 01:40:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:40:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 01:40:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:40:18,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155830785] [2020-08-19 01:40:18,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:18,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:40:18,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551404738] [2020-08-19 01:40:18,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:40:18,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:40:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:40:18,062 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-19 01:40:18,197 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 01:40:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:23,005 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-19 01:40:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:40:23,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-19 01:40:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:23,038 INFO L225 Difference]: With dead ends: 1386 [2020-08-19 01:40:23,038 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 01:40:23,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:40:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 01:40:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-19 01:40:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 01:40:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-19 01:40:23,245 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-19 01:40:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:23,245 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-19 01:40:23,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:40:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-19 01:40:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 01:40:23,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:23,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:23,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:40:23,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:23,252 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-19 01:40:23,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:23,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947346721] [2020-08-19 01:40:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:40:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:40:23,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947346721] [2020-08-19 01:40:23,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:23,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:40:23,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951446439] [2020-08-19 01:40:23,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:40:23,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:23,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:40:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:40:23,572 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-19 01:40:23,840 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-19 01:40:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:27,000 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-19 01:40:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:40:27,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 01:40:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:27,014 INFO L225 Difference]: With dead ends: 1673 [2020-08-19 01:40:27,014 INFO L226 Difference]: Without dead ends: 986 [2020-08-19 01:40:27,018 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 [2020-08-19 01:40:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-19 01:40:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-19 01:40:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 01:40:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-19 01:40:27,154 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-19 01:40:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:27,155 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-19 01:40:27,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:40:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-19 01:40:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 01:40:27,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:27,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:27,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:40:27,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:27,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-19 01:40:27,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:27,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532462232] [2020-08-19 01:40:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 01:40:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:40:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 01:40:27,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532462232] [2020-08-19 01:40:27,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:27,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:40:27,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747930793] [2020-08-19 01:40:27,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:40:27,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:40:27,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:40:27,682 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-19 01:40:33,288 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-19 01:40:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:33,701 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-19 01:40:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 01:40:33,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 01:40:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:33,714 INFO L225 Difference]: With dead ends: 2445 [2020-08-19 01:40:33,714 INFO L226 Difference]: Without dead ends: 1743 [2020-08-19 01:40:33,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:40:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-19 01:40:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-19 01:40:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-19 01:40:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-19 01:40:33,846 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-19 01:40:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:33,847 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-19 01:40:33,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:40:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-19 01:40:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 01:40:33,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:33,854 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:33,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:40:33,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-19 01:40:33,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:33,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022481566] [2020-08-19 01:40:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 01:40:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:40:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:40:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:40:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 01:40:34,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022481566] [2020-08-19 01:40:34,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:34,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:40:34,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127253617] [2020-08-19 01:40:34,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:40:34,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:34,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:40:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:40:34,436 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-19 01:40:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:39,514 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-19 01:40:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:40:39,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 01:40:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:39,538 INFO L225 Difference]: With dead ends: 4737 [2020-08-19 01:40:39,539 INFO L226 Difference]: Without dead ends: 3284 [2020-08-19 01:40:39,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:40:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-19 01:40:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-19 01:40:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-19 01:40:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-19 01:40:39,821 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-19 01:40:39,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:39,827 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-19 01:40:39,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:40:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-19 01:40:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 01:40:39,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:39,837 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:39,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:40:39,838 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-19 01:40:39,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:39,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616477847] [2020-08-19 01:40:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:40:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:40:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 01:40:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:40:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:40:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:40:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 01:40:40,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616477847] [2020-08-19 01:40:40,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:40,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:40:40,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612884552] [2020-08-19 01:40:40,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:40:40,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:40,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:40:40,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:40:40,324 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-19 01:40:40,466 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 01:40:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:43,777 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-19 01:40:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:40:43,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 01:40:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:43,787 INFO L225 Difference]: With dead ends: 4462 [2020-08-19 01:40:43,788 INFO L226 Difference]: Without dead ends: 1751 [2020-08-19 01:40:43,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:40:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-19 01:40:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-19 01:40:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-19 01:40:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-19 01:40:43,928 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-19 01:40:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:43,929 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-19 01:40:43,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:40:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-19 01:40:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 01:40:43,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:43,933 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:43,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:40:43,933 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:43,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-19 01:40:43,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:43,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261637768] [2020-08-19 01:40:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:40:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:40:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:40:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:40:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 01:40:44,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261637768] [2020-08-19 01:40:44,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:44,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:40:44,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936423021] [2020-08-19 01:40:44,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:40:44,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:40:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:40:44,415 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-19 01:40:45,886 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-19 01:40:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:47,527 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-19 01:40:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:40:47,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 01:40:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:47,541 INFO L225 Difference]: With dead ends: 2489 [2020-08-19 01:40:47,541 INFO L226 Difference]: Without dead ends: 1716 [2020-08-19 01:40:47,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:40:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-19 01:40:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-19 01:40:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-19 01:40:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-19 01:40:47,692 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-19 01:40:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:47,693 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-19 01:40:47,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:40:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-19 01:40:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 01:40:47,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:47,698 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:47,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:40:47,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:47,699 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-19 01:40:47,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:47,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591340865] [2020-08-19 01:40:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:40:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:40:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 01:40:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 01:40:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 01:40:48,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591340865] [2020-08-19 01:40:48,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:48,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 01:40:48,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055745757] [2020-08-19 01:40:48,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:40:48,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:40:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:40:48,305 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-19 01:40:50,011 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 01:40:51,081 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 01:40:51,295 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 01:40:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:40:54,953 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-19 01:40:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:40:54,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 01:40:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:40:54,964 INFO L225 Difference]: With dead ends: 3355 [2020-08-19 01:40:54,964 INFO L226 Difference]: Without dead ends: 1940 [2020-08-19 01:40:54,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:40:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-19 01:40:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-19 01:40:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-19 01:40:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-19 01:40:55,195 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-19 01:40:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:40:55,196 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-19 01:40:55,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:40:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-19 01:40:55,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-19 01:40:55,205 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:40:55,206 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:40:55,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:40:55,206 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:40:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:40:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-19 01:40:55,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:40:55,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999910100] [2020-08-19 01:40:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:40:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:40:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:40:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:40:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:40:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:40:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:40:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:40:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 01:40:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:40:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:40:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 01:40:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:40:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 01:40:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:40:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-19 01:40:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:40:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-19 01:40:56,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999910100] [2020-08-19 01:40:56,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:40:56,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 01:40:56,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403435372] [2020-08-19 01:40:56,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:40:56,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:40:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:40:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:40:56,509 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-19 01:40:56,638 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 01:40:56,956 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-19 01:40:57,255 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-19 01:40:59,032 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-19 01:41:00,430 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 01:41:00,642 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 01:41:05,176 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 01:41:05,431 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103