/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:05:41,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:05:41,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:05:41,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:05:41,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:05:41,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:05:41,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:05:41,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:05:41,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:05:41,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:05:41,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:05:41,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:05:41,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:05:41,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:05:41,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:05:41,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:05:41,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:05:41,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:05:41,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:05:41,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:05:41,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:05:41,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:05:41,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:05:41,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:05:41,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:05:41,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:05:41,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:05:41,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:05:41,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:05:41,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:05:41,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:05:41,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:05:41,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:05:41,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:05:41,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:05:41,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:05:41,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:05:41,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:05:41,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:05:41,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:05:41,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:05:41,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 04:05:41,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:05:41,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:05:41,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:05:41,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:05:41,382 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:05:41,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:05:41,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:05:41,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:05:41,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:05:41,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:05:41,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:05:41,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:05:41,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:05:41,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:05:41,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:05:41,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:05:41,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:05:41,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:05:41,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:05:41,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:05:41,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:05:41,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:05:41,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:05:41,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:05:41,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:05:41,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:05:41,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 04:05:41,387 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 04:05:41,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:05:41,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:05:41,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:05:41,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:05:41,736 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:05:41,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 04:05:41,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4baebaec/f13496a01ccc4be5b8ea125814a7d035/FLAG610798693 [2020-08-19 04:05:42,562 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:05:42,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 04:05:42,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4baebaec/f13496a01ccc4be5b8ea125814a7d035/FLAG610798693 [2020-08-19 04:05:42,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4baebaec/f13496a01ccc4be5b8ea125814a7d035 [2020-08-19 04:05:42,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:05:42,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:05:42,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:05:42,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:05:42,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:05:42,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:05:42" (1/1) ... [2020-08-19 04:05:42,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4b9e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:42, skipping insertion in model container [2020-08-19 04:05:42,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:05:42" (1/1) ... [2020-08-19 04:05:42,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:05:42,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:05:44,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:05:44,383 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:05:44,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:05:44,657 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:05:44,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44 WrapperNode [2020-08-19 04:05:44,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:05:44,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:05:44,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:05:44,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:05:44,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... [2020-08-19 04:05:44,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:05:44,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:05:44,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:05:44,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:05:44,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:05:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:05:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:05:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 04:05:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 04:05:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-19 04:05:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 04:05:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 04:05:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 04:05:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-19 04:05:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-19 04:05:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 04:05:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-19 04:05:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-19 04:05:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-19 04:05:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:05:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-19 04:05:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 04:05:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 04:05:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 04:05:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 04:05:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-19 04:05:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-19 04:05:44,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-19 04:05:44,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 04:05:44,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 04:05:44,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 04:05:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 04:05:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-19 04:05:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-19 04:05:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 04:05:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 04:05:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-19 04:05:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 04:05:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 04:05:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:05:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 04:05:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 04:05:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:05:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 04:05:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-19 04:05:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:05:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 04:05:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 04:05:44,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-19 04:05:44,975 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-19 04:05:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-19 04:05:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-19 04:05:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-19 04:05:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 04:05:44,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 04:05:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 04:05:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:05:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 04:05:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:05:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 04:05:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:05:45,677 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 04:05:46,563 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:05:46,564 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 04:05:46,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:05:46 BoogieIcfgContainer [2020-08-19 04:05:46,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:05:46,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:05:46,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:05:46,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:05:46,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:05:42" (1/3) ... [2020-08-19 04:05:46,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:05:46, skipping insertion in model container [2020-08-19 04:05:46,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:05:44" (2/3) ... [2020-08-19 04:05:46,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:05:46, skipping insertion in model container [2020-08-19 04:05:46,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:05:46" (3/3) ... [2020-08-19 04:05:46,580 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 04:05:46,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:05:46,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:05:46,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:05:46,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:05:46,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:05:46,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:05:46,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:05:46,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:05:46,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:05:46,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:05:46,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:05:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-19 04:05:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 04:05:46,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:05:46,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:05:46,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:05:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:05:46,730 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-19 04:05:46,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:05:46,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131507494] [2020-08-19 04:05:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:05:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:05:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:05:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 04:05:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:05:47,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131507494] [2020-08-19 04:05:47,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:05:47,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:05:47,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288185835] [2020-08-19 04:05:47,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:05:47,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:05:47,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:05:47,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:05:47,503 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-19 04:05:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:05:52,546 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-19 04:05:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:05:52,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-19 04:05:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:05:52,582 INFO L225 Difference]: With dead ends: 1386 [2020-08-19 04:05:52,582 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 04:05:52,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:05:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 04:05:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-19 04:05:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 04:05:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-19 04:05:52,869 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-19 04:05:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:05:52,870 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-19 04:05:52,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:05:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-19 04:05:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 04:05:52,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:05:52,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:05:52,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:05:52,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:05:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:05:52,876 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-19 04:05:52,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:05:52,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726911170] [2020-08-19 04:05:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:05:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:05:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:05:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:05:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:05:53,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726911170] [2020-08-19 04:05:53,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:05:53,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:05:53,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388336973] [2020-08-19 04:05:53,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:05:53,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:05:53,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:05:53,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:05:53,203 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-19 04:05:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:05:56,611 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-19 04:05:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:05:56,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 04:05:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:05:56,625 INFO L225 Difference]: With dead ends: 1673 [2020-08-19 04:05:56,625 INFO L226 Difference]: Without dead ends: 986 [2020-08-19 04:05:56,628 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 [2020-08-19 04:05:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-19 04:05:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-19 04:05:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 04:05:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-19 04:05:56,717 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-19 04:05:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:05:56,718 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-19 04:05:56,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:05:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-19 04:05:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:05:56,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:05:56,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:05:56,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:05:56,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:05:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:05:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-19 04:05:56,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:05:56,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218586269] [2020-08-19 04:05:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:05:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:05:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:05:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:05:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:05:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:05:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:05:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:05:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:05:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 04:05:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:05:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 04:05:57,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218586269] [2020-08-19 04:05:57,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:05:57,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:05:57,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514911801] [2020-08-19 04:05:57,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:05:57,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:05:57,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:05:57,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:05:57,347 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-19 04:06:03,200 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-19 04:06:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:06:03,599 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-19 04:06:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 04:06:03,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 04:06:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:06:03,615 INFO L225 Difference]: With dead ends: 2445 [2020-08-19 04:06:03,616 INFO L226 Difference]: Without dead ends: 1743 [2020-08-19 04:06:03,620 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 [2020-08-19 04:06:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-19 04:06:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-19 04:06:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-19 04:06:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-19 04:06:03,801 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-19 04:06:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:06:03,803 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-19 04:06:03,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:06:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-19 04:06:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:06:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:06:03,817 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:06:03,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:06:03,817 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:06:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:06:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-19 04:06:03,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:06:03,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112871786] [2020-08-19 04:06:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:06:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:06:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:06:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:06:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:06:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:06:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:06:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:06:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 04:06:04,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112871786] [2020-08-19 04:06:04,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:06:04,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:06:04,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070801145] [2020-08-19 04:06:04,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:06:04,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:06:04,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:06:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:06:04,411 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-19 04:06:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:06:09,808 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-19 04:06:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:06:09,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:06:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:06:09,839 INFO L225 Difference]: With dead ends: 4737 [2020-08-19 04:06:09,839 INFO L226 Difference]: Without dead ends: 3284 [2020-08-19 04:06:09,847 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 [2020-08-19 04:06:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-19 04:06:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-19 04:06:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-19 04:06:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-19 04:06:10,125 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-19 04:06:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:06:10,126 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-19 04:06:10,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:06:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-19 04:06:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:06:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:06:10,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:06:10,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:06:10,137 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:06:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:06:10,137 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-19 04:06:10,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:06:10,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381634996] [2020-08-19 04:06:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:06:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:06:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:06:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:06:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:06:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:06:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:06:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:06:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 04:06:10,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381634996] [2020-08-19 04:06:10,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:06:10,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:06:10,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022956449] [2020-08-19 04:06:10,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:06:10,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:06:10,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:06:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:06:10,558 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-19 04:06:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:06:14,089 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-19 04:06:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:06:14,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:06:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:06:14,099 INFO L225 Difference]: With dead ends: 4462 [2020-08-19 04:06:14,100 INFO L226 Difference]: Without dead ends: 1751 [2020-08-19 04:06:14,107 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 [2020-08-19 04:06:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-19 04:06:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-19 04:06:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-19 04:06:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-19 04:06:14,249 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-19 04:06:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:06:14,249 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-19 04:06:14,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:06:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-19 04:06:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 04:06:14,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:06:14,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:06:14,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:06:14,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:06:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:06:14,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-19 04:06:14,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:06:14,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453098663] [2020-08-19 04:06:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:06:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:06:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:06:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:06:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:06:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:06:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 04:06:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 04:06:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 04:06:14,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453098663] [2020-08-19 04:06:14,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:06:14,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:06:14,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260248737] [2020-08-19 04:06:14,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:06:14,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:06:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:06:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:06:14,761 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-19 04:06:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:06:17,345 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-19 04:06:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:06:17,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 04:06:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:06:17,360 INFO L225 Difference]: With dead ends: 2489 [2020-08-19 04:06:17,360 INFO L226 Difference]: Without dead ends: 1716 [2020-08-19 04:06:17,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:06:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-19 04:06:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-19 04:06:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-19 04:06:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-19 04:06:17,521 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-19 04:06:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:06:17,522 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-19 04:06:17,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:06:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-19 04:06:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 04:06:17,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:06:17,527 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:06:17,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:06:17,528 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:06:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:06:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-19 04:06:17,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:06:17,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563582880] [2020-08-19 04:06:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:06:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:06:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:06:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:06:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:17,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:06:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:06:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 04:06:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 04:06:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 04:06:18,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563582880] [2020-08-19 04:06:18,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:06:18,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 04:06:18,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704959108] [2020-08-19 04:06:18,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:06:18,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:06:18,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:06:18,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:06:18,200 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-19 04:06:20,117 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 04:06:21,247 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 04:06:21,461 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 04:06:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:06:25,324 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-19 04:06:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:06:25,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 04:06:25,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:06:25,344 INFO L225 Difference]: With dead ends: 3355 [2020-08-19 04:06:25,344 INFO L226 Difference]: Without dead ends: 1940 [2020-08-19 04:06:25,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:06:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-19 04:06:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-19 04:06:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-19 04:06:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-19 04:06:25,660 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-19 04:06:25,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:06:25,661 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-19 04:06:25,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:06:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-19 04:06:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-19 04:06:25,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:06:25,672 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:06:25,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:06:25,672 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:06:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:06:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-19 04:06:25,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:06:25,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110859276] [2020-08-19 04:06:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:06:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,012 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-19 04:06:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:06:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:06:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:06:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 04:06:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 04:06:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:06:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:06:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 04:06:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:06:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:06:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 04:06:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:06:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 04:06:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:06:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-19 04:06:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:06:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-19 04:06:26,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110859276] [2020-08-19 04:06:26,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:06:26,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 04:06:26,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037212342] [2020-08-19 04:06:26,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:06:26,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:06:26,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:06:26,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:06:26,990 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-19 04:06:27,130 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 04:06:27,448 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-19 04:06:27,759 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-19 04:06:29,472 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-19 04:06:30,828 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 04:06:31,064 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 04:06:35,728 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 04:06:35,962 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103