/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=NARROWEST -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 22:25:53,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:25:53,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:25:53,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:25:53,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:25:53,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:25:53,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:25:53,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:25:53,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:25:53,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:25:53,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:25:53,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:25:53,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:25:53,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:25:53,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:25:53,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:25:53,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:25:53,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:25:53,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:25:53,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:25:53,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:25:53,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:25:53,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:25:53,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:25:53,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:25:53,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:25:53,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:25:53,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:25:53,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:25:53,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:25:53,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:25:53,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:25:53,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:25:53,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:25:53,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:25:53,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:25:53,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:25:53,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:25:53,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:25:53,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:25:53,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:25:53,906 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 22:25:53,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:25:53,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:25:53,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:25:53,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:25:53,953 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:25:53,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:25:53,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:25:53,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:25:53,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:25:53,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:25:53,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:25:53,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:25:53,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:25:53,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:25:53,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:25:53,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:25:53,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:25:53,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:25:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:25:53,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:25:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:25:53,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:25:53,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:25:53,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:25:53,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:25:53,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:25:53,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 22:25:53,959 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:25:54,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:25:54,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:25:54,297 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:25:54,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:25:54,300 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:25:54,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 22:25:54,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d817f7b2/d30511404f434168a083c62ae8e0a4e9/FLAGe85d9b49d [2020-08-18 22:25:55,116 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:25:55,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 22:25:55,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d817f7b2/d30511404f434168a083c62ae8e0a4e9/FLAGe85d9b49d [2020-08-18 22:25:55,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d817f7b2/d30511404f434168a083c62ae8e0a4e9 [2020-08-18 22:25:55,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:25:55,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:25:55,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:25:55,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:25:55,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:25:55,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:25:55" (1/1) ... [2020-08-18 22:25:55,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e84d8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:55, skipping insertion in model container [2020-08-18 22:25:55,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:25:55" (1/1) ... [2020-08-18 22:25:55,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:25:55,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:25:56,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:25:56,853 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:25:57,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:25:57,130 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:25:57,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57 WrapperNode [2020-08-18 22:25:57,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:25:57,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:25:57,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:25:57,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:25:57,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (1/1) ... [2020-08-18 22:25:57,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:25:57,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:25:57,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:25:57,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:25:57,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (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 22:25:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:25:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:25:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 22:25:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 22:25:57,387 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 22:25:57,387 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 22:25:57,388 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 22:25:57,388 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 22:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 22:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 22:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 22:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 22:25:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 22:25:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 22:25:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:25:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 22:25:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 22:25:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 22:25:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 22:25:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 22:25:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 22:25:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 22:25:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 22:25:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 22:25:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 22:25:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 22:25:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 22:25:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 22:25:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 22:25:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 22:25:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 22:25:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 22:25:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 22:25:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 22:25:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 22:25:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 22:25:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 22:25:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 22:25:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 22:25:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 22:25:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 22:25:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 22:25:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 22:25:57,406 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 22:25:57,406 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 22:25:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:25:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 22:25:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 22:25:57,406 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 22:25:57,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 22:25:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 22:25:57,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 22:25:57,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 22:25:57,410 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 22:25:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 22:25:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 22:25:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 22:25:57,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 22:25:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:25:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:25:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:25:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 22:25:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:25:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:25:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 22:25:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:25:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 22:25:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 22:25:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 22:25:57,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 22:25:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 22:25:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 22:25:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 22:25:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 22:25:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 22:25:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 22:25:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 22:25:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 22:25:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 22:25:57,426 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 22:25:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 22:25:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 22:25:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 22:25:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 22:25:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 22:25:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 22:25:57,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 22:25:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 22:25:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 22:25:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 22:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 22:25:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:25:58,017 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 22:25:58,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:25:58,746 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:25:58,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:58 BoogieIcfgContainer [2020-08-18 22:25:58,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:25:58,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:25:58,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:25:58,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:25:58,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:25:55" (1/3) ... [2020-08-18 22:25:58,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a77a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:58, skipping insertion in model container [2020-08-18 22:25:58,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:25:57" (2/3) ... [2020-08-18 22:25:58,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a77a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:58, skipping insertion in model container [2020-08-18 22:25:58,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:58" (3/3) ... [2020-08-18 22:25:58,761 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 22:25:58,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:25:58,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:25:58,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:25:58,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:25:58,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:25:58,818 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:25:58,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:25:58,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:25:58,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:25:58,818 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:25:58,818 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:25:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 22:25:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 22:25:58,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:25:58,860 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 22:25:58,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:25:58,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:25:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 22:25:58,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:25:58,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450068860] [2020-08-18 22:25:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:25:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:25:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:25:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:25:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:25:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:25:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:25:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:25:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:25:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:25:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:25:59,577 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 22:25:59,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450068860] [2020-08-18 22:25:59,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:25:59,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:25:59,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494741611] [2020-08-18 22:25:59,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:25:59,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:25:59,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:25:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:25:59,616 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 22:25:59,781 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 22:26:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:04,575 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 22:26:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:26:04,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 22:26:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:04,607 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 22:26:04,607 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 22:26:04,617 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 22:26:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 22:26:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 22:26:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 22:26:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 22:26:04,808 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 22:26:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:04,809 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 22:26:04,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:26:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 22:26:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 22:26:04,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:04,814 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 22:26:04,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:26:04,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:04,816 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 22:26:04,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:04,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422695278] [2020-08-18 22:26:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:26:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:05,146 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 22:26:05,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422695278] [2020-08-18 22:26:05,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:05,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:26:05,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243970978] [2020-08-18 22:26:05,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:26:05,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:05,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:26:05,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:26:05,151 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 22:26:05,540 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-18 22:26:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:08,510 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 22:26:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:26:08,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 22:26:08,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:08,519 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 22:26:08,520 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 22:26:08,524 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 22:26:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 22:26:08,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 22:26:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 22:26:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 22:26:08,682 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 22:26:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:08,683 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 22:26:08,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:26:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 22:26:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 22:26:08,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:08,690 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 22:26:08,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:26:08,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 22:26:08,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:08,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536614250] [2020-08-18 22:26:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:26:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 22:26:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:26:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:09,265 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 22:26:09,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536614250] [2020-08-18 22:26:09,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:09,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:26:09,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282589823] [2020-08-18 22:26:09,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:26:09,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:26:09,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:26:09,269 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 22:26:15,194 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 22:26:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:15,613 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 22:26:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 22:26:15,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 22:26:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:15,633 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 22:26:15,633 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 22:26:15,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 22:26:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 22:26:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 22:26:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 22:26:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 22:26:15,793 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 22:26:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:15,794 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 22:26:15,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:26:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 22:26:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 22:26:15,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:15,802 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 22:26:15,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:26:15,802 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:15,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 22:26:15,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:15,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563063202] [2020-08-18 22:26:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:26:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 22:26:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 22:26:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 22:26:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:16,351 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 22:26:16,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563063202] [2020-08-18 22:26:16,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:16,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:26:16,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183060024] [2020-08-18 22:26:16,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:16,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:16,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:16,357 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 22:26:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:21,623 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 22:26:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:26:21,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 22:26:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:21,647 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 22:26:21,648 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 22:26:21,655 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 22:26:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 22:26:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 22:26:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 22:26:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 22:26:21,913 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 22:26:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:21,916 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 22:26:21,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 22:26:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 22:26:21,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:21,928 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 22:26:21,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:26:21,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 22:26:21,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:21,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097796681] [2020-08-18 22:26:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:26:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 22:26:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:26:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 22:26:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 22:26:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:22,411 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 22:26:22,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097796681] [2020-08-18 22:26:22,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:22,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:26:22,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835174486] [2020-08-18 22:26:22,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:22,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:22,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:22,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:22,415 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 22:26:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:25,832 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 22:26:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 22:26:25,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 22:26:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:25,844 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 22:26:25,844 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 22:26:25,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:26:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 22:26:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 22:26:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 22:26:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 22:26:26,050 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 22:26:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:26,050 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 22:26:26,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 22:26:26,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 22:26:26,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:26,057 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 22:26:26,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:26:26,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 22:26:26,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:26,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685570964] [2020-08-18 22:26:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:26:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:26:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 22:26:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 22:26:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:26,577 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 22:26:26,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685570964] [2020-08-18 22:26:26,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:26,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:26:26,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416267618] [2020-08-18 22:26:26,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:26,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:26,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:26,580 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 22:26:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:29,207 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 22:26:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:26:29,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 22:26:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:29,221 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 22:26:29,221 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 22:26:29,224 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 22:26:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 22:26:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 22:26:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 22:26:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 22:26:29,349 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 22:26:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:29,349 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 22:26:29,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 22:26:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 22:26:29,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:29,354 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 22:26:29,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:26:29,355 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 22:26:29,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:29,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933783969] [2020-08-18 22:26:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:26:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:26:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 22:26:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 22:26:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:29,875 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 22:26:29,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933783969] [2020-08-18 22:26:29,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:29,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 22:26:29,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560766261] [2020-08-18 22:26:29,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:26:29,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:29,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:26:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:26:29,877 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 22:26:31,716 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 22:26:32,896 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 22:26:33,109 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 22:26:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:36,684 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 22:26:36,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 22:26:36,684 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 22:26:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:36,696 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 22:26:36,696 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 22:26:36,701 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 22:26:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 22:26:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 22:26:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 22:26:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 22:26:36,840 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 22:26:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:36,841 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 22:26:36,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:26:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 22:26:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 22:26:36,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:36,846 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 22:26:36,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:26:36,847 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 22:26:36,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:36,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713605379] [2020-08-18 22:26:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 22:26:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:26:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:26:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:26:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:26:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:26:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:26:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 22:26:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 22:26:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 22:26:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:37,866 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 22:26:37,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713605379] [2020-08-18 22:26:37,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:37,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 22:26:37,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19817257] [2020-08-18 22:26:37,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:26:37,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:37,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:26:37,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:26:37,870 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 22:26:38,069 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 22:26:38,384 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 22:26:38,725 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 22:26:40,493 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 22:26:41,881 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 22:26:42,108 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 22:26:46,715 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 22:26:46,941 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103