/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:00:44,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:00:44,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:00:44,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:00:44,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:00:44,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:00:44,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:00:44,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:00:44,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:00:44,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:00:44,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:00:44,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:00:44,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:00:44,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:00:44,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:00:44,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:00:44,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:00:44,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:00:44,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:00:44,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:00:44,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:00:44,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:00:44,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:00:44,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:00:44,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:00:44,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:00:44,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:00:44,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:00:44,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:00:44,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:00:44,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:00:44,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:00:44,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:00:44,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:00:44,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:00:44,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:00:44,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:00:44,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:00:44,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:00:44,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:00:44,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:00:44,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 20:00:44,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:00:44,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:00:44,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:00:44,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:00:44,564 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:00:44,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:00:44,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:00:44,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:00:44,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:00:44,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:00:44,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:00:44,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:00:44,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:00:44,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:00:44,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:00:44,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:00:44,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:00:44,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:00:44,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:00:44,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:00:44,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:00:44,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:00:44,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:00:44,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:00:44,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:00:44,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:00:44,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 20:00:44,569 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 20:00:44,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:00:44,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:00:44,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:00:44,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:00:44,925 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:00:44,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 20:00:45,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc6136d8/c4ed2dc998114612bf781f3855eb5341/FLAGc3453f748 [2020-08-18 20:00:45,726 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:00:45,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 20:00:45,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc6136d8/c4ed2dc998114612bf781f3855eb5341/FLAGc3453f748 [2020-08-18 20:00:45,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc6136d8/c4ed2dc998114612bf781f3855eb5341 [2020-08-18 20:00:45,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:00:45,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:00:45,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:00:45,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:00:45,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:00:45,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:00:45" (1/1) ... [2020-08-18 20:00:45,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427c53a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:45, skipping insertion in model container [2020-08-18 20:00:45,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:00:45" (1/1) ... [2020-08-18 20:00:45,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:00:45,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:00:47,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:00:47,320 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:00:47,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:00:47,619 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:00:47,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47 WrapperNode [2020-08-18 20:00:47,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:00:47,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:00:47,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:00:47,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:00:47,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... [2020-08-18 20:00:47,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:00:47,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:00:47,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:00:47,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:00:47,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:00:47,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:00:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:00:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 20:00:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 20:00:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 20:00:47,879 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 20:00:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 20:00:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 20:00:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 20:00:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 20:00:47,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 20:00:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 20:00:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 20:00:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 20:00:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:00:47,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 20:00:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 20:00:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 20:00:47,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 20:00:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 20:00:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 20:00:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 20:00:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 20:00:47,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 20:00:47,888 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 20:00:47,889 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 20:00:47,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 20:00:47,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 20:00:47,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 20:00:47,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 20:00:47,894 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 20:00:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 20:00:47,896 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 20:00:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 20:00:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 20:00:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 20:00:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 20:00:47,897 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 20:00:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 20:00:47,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 20:00:47,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 20:00:47,900 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 20:00:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:00:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 20:00:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 20:00:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 20:00:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 20:00:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 20:00:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 20:00:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 20:00:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 20:00:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 20:00:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 20:00:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:00:48,438 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 20:00:49,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:00:49,179 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 20:00:49,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:00:49 BoogieIcfgContainer [2020-08-18 20:00:49,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:00:49,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:00:49,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:00:49,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:00:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:00:45" (1/3) ... [2020-08-18 20:00:49,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:00:49, skipping insertion in model container [2020-08-18 20:00:49,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:00:47" (2/3) ... [2020-08-18 20:00:49,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:00:49, skipping insertion in model container [2020-08-18 20:00:49,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:00:49" (3/3) ... [2020-08-18 20:00:49,195 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 20:00:49,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:00:49,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:00:49,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:00:49,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:00:49,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:00:49,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:00:49,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:00:49,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:00:49,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:00:49,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:00:49,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:00:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 20:00:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 20:00:49,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:00:49,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:00:49,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:00:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:00:49,309 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 20:00:49,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:00:49,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062907449] [2020-08-18 20:00:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:00:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,849 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 20:00:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:00:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:00:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:00:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:00:50,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062907449] [2020-08-18 20:00:50,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:00:50,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:00:50,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205787659] [2020-08-18 20:00:50,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:00:50,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:00:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:00:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:00:50,055 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 20:00:50,189 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 20:00:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:00:55,183 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 20:00:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:00:55,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 20:00:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:00:55,214 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 20:00:55,215 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 20:00:55,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:00:55,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 20:00:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 20:00:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 20:00:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 20:00:55,410 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 20:00:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:00:55,410 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 20:00:55,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:00:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 20:00:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:00:55,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:00:55,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:00:55,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:00:55,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:00:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:00:55,416 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 20:00:55,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:00:55,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422695278] [2020-08-18 20:00:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:00:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:00:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:00:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:00:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:00:55,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422695278] [2020-08-18 20:00:55,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:00:55,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:00:55,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243970978] [2020-08-18 20:00:55,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:00:55,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:00:55,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:00:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:00:55,776 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 20:00:55,899 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 20:00:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:00:59,131 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 20:00:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:00:59,131 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 20:00:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:00:59,140 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 20:00:59,140 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 20:00:59,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:00:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 20:00:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 20:00:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 20:00:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 20:00:59,253 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 20:00:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:00:59,254 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 20:00:59,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:00:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 20:00:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 20:00:59,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:00:59,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:00:59,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:00:59,263 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:00:59,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:00:59,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 20:00:59,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:00:59,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536614250] [2020-08-18 20:00:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:00:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:00:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:00:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:00:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:00:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:00:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:00:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:00:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:00:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:00:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:00:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-18 20:00:59,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536614250] [2020-08-18 20:00:59,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:00:59,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:00:59,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282589823] [2020-08-18 20:00:59,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:00:59,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:00:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:00:59,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:00:59,733 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 20:01:05,537 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 20:01:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:05,940 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 20:01:05,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 20:01:05,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 20:01:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:05,958 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 20:01:05,958 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 20:01:05,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:01:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 20:01:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 20:01:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 20:01:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 20:01:06,131 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 20:01:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:06,132 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 20:01:06,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:01:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 20:01:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:01:06,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:06,142 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:01:06,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:01:06,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 20:01:06,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:06,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563063202] [2020-08-18 20:01:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:01:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:01:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:01:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:01:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:01:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-18 20:01:06,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563063202] [2020-08-18 20:01:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:06,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:01:06,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183060024] [2020-08-18 20:01:06,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:01:06,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:06,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:01:06,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:01:06,804 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 20:01:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:11,861 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 20:01:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:01:11,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:01:11,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:11,890 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 20:01:11,890 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 20:01:11,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:01:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 20:01:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 20:01:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 20:01:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 20:01:12,151 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 20:01:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:12,153 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 20:01:12,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:01:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 20:01:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:01:12,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:12,162 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:01:12,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:01:12,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 20:01:12,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:12,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097796681] [2020-08-18 20:01:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:01:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:01:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:01:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:01:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:01:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 20:01:12,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097796681] [2020-08-18 20:01:12,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:12,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:01:12,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835174486] [2020-08-18 20:01:12,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:01:12,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:12,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:01:12,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:01:12,691 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 20:01:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:16,213 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 20:01:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:01:16,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:01:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:16,231 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 20:01:16,231 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 20:01:16,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:01:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 20:01:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 20:01:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 20:01:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 20:01:16,420 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 20:01:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:16,421 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 20:01:16,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:01:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 20:01:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:01:16,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:16,425 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:01:16,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:01:16,426 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:16,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 20:01:16,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:16,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685570964] [2020-08-18 20:01:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:01:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:01:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:01:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:01:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:01:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 20:01:16,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685570964] [2020-08-18 20:01:16,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:16,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:01:16,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416267618] [2020-08-18 20:01:16,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:01:16,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:01:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:01:16,892 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 20:01:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:19,416 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 20:01:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:01:19,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:01:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:19,430 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 20:01:19,430 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 20:01:19,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:01:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 20:01:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 20:01:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 20:01:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 20:01:19,577 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 20:01:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:19,578 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 20:01:19,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:01:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 20:01:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:01:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:19,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:01:19,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:01:19,583 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 20:01:19,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:19,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933783969] [2020-08-18 20:01:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:01:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:01:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:01:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 20:01:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 20:01:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 20:01:20,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933783969] [2020-08-18 20:01:20,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:20,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 20:01:20,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560766261] [2020-08-18 20:01:20,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:01:20,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:20,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:01:20,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:01:20,160 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 20:01:21,987 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 20:01:23,092 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 20:01:23,305 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 20:01:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:26,794 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 20:01:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:01:26,795 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 20:01:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:26,815 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 20:01:26,815 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 20:01:26,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:01:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 20:01:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 20:01:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 20:01:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 20:01:27,067 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 20:01:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:27,068 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 20:01:27,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:01:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 20:01:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 20:01:27,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:27,078 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:01:27,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:01:27,078 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 20:01:27,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:27,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713605379] [2020-08-18 20:01:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:01:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:01:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:01:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:01:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 20:01:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:01:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 20:01:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 20:01:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 20:01:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-18 20:01:28,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713605379] [2020-08-18 20:01:28,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:28,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 20:01:28,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19817257] [2020-08-18 20:01:28,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:01:28,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:28,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:01:28,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:01:28,383 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 20:01:28,503 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 20:01:28,819 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 20:01:29,143 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 20:01:30,890 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 20:01:32,240 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 20:01:32,448 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 20:01:36,811 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 20:01:37,048 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-08-18 20:01:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:01:40,153 INFO L93 Difference]: Finished difference Result 3441 states and 4458 transitions. [2020-08-18 20:01:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 20:01:40,158 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2020-08-18 20:01:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:01:40,173 INFO L225 Difference]: With dead ends: 3441 [2020-08-18 20:01:40,174 INFO L226 Difference]: Without dead ends: 2674 [2020-08-18 20:01:40,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 20:01:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-08-18 20:01:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1764. [2020-08-18 20:01:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-08-18 20:01:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2110 transitions. [2020-08-18 20:01:40,413 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2110 transitions. Word has length 197 [2020-08-18 20:01:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:01:40,413 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2110 transitions. [2020-08-18 20:01:40,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 20:01:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2110 transitions. [2020-08-18 20:01:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-18 20:01:40,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:01:40,420 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, 1, 1] [2020-08-18 20:01:40,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:01:40,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:01:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:01:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash -340207207, now seen corresponding path program 1 times [2020-08-18 20:01:40,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:01:40,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767088335] [2020-08-18 20:01:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:01:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:01:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:01:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:01:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:01:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:01:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:01:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:01:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 20:01:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:01:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:01:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 20:01:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:01:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 20:01:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:41,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:01:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 20:01:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:01:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-18 20:01:41,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767088335] [2020-08-18 20:01:41,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:01:41,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:01:41,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381152080] [2020-08-18 20:01:41,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:01:41,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:01:41,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:01:41,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:01:41,091 INFO L87 Difference]: Start difference. First operand 1764 states and 2110 transitions. Second operand 11 states.