/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:38:06,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:38:06,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:38:06,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:38:06,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:38:06,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:38:06,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:38:06,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:38:06,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:38:06,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:38:06,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:38:06,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:38:06,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:38:06,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:38:06,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:38:06,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:38:06,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:38:06,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:38:06,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:38:06,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:38:06,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:38:06,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:38:06,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:38:06,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:38:06,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:38:06,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:38:06,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:38:06,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:38:06,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:38:06,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:38:06,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:38:06,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:38:06,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:38:06,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:38:06,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:38:06,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:38:06,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:38:06,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:38:06,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:38:06,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:38:06,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:38:06,525 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 [2020-08-21 14:38:06,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:38:06,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:38:06,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:38:06,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:38:06,578 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:38:06,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:38:06,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:38:06,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:38:06,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:38:06,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:38:06,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:38:06,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:38:06,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:38:06,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:38:06,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:38:06,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:38:06,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:38:06,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:38:06,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:38:06,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:38:06,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:38:06,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:38:06,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:38:06,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:38:06,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:38:06,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:38:06,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 14:38:06,584 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 -> log-additional-information=true; [2020-08-21 14:38:06,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:38:06,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:38:06,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:38:06,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:38:06,988 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:38:06,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 14:38:07,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d708d94c/8aca6723858744308530b296678bc680/FLAG84694852c [2020-08-21 14:38:07,906 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:38:07,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 14:38:07,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d708d94c/8aca6723858744308530b296678bc680/FLAG84694852c [2020-08-21 14:38:08,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d708d94c/8aca6723858744308530b296678bc680 [2020-08-21 14:38:08,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:38:08,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:38:08,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:38:08,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:38:08,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:38:08,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:38:08" (1/1) ... [2020-08-21 14:38:08,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7ea157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:08, skipping insertion in model container [2020-08-21 14:38:08,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:38:08" (1/1) ... [2020-08-21 14:38:08,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:38:08,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:38:09,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:38:09,955 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:38:10,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:38:10,228 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:38:10,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10 WrapperNode [2020-08-21 14:38:10,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:38:10,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:38:10,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:38:10,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:38:10,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (1/1) ... [2020-08-21 14:38:10,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:38:10,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:38:10,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:38:10,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:38:10,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (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 [2020-08-21 14:38:10,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:38:10,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:38:10,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 14:38:10,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 14:38:10,505 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-21 14:38:10,505 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 14:38:10,507 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 14:38:10,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 14:38:10,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-21 14:38:10,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-21 14:38:10,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 14:38:10,509 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-21 14:38:10,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-21 14:38:10,627 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-21 14:38:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:38:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-21 14:38:10,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 14:38:10,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 14:38:10,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 14:38:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 14:38:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 14:38:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 14:38:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 14:38:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 14:38:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 14:38:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 14:38:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-21 14:38:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-21 14:38:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-21 14:38:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-21 14:38:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-21 14:38:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-21 14:38:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-21 14:38:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-21 14:38:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-21 14:38:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-21 14:38:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-21 14:38:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-21 14:38:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-21 14:38:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-21 14:38:10,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-21 14:38:10,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 14:38:10,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:38:10,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 14:38:10,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 14:38:10,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 14:38:10,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 14:38:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 14:38:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-21 14:38:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-21 14:38:10,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-21 14:38:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 14:38:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 14:38:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 14:38:10,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 14:38:10,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 14:38:10,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 14:38:10,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 14:38:10,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 14:38:10,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 14:38:10,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 14:38:10,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 14:38:10,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 14:38:10,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 14:38:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 14:38:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 14:38:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 14:38:10,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 14:38:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 14:38:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-21 14:38:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-21 14:38:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-21 14:38:10,647 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-21 14:38:10,648 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-21 14:38:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-21 14:38:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-21 14:38:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-21 14:38:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-21 14:38:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-21 14:38:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-21 14:38:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-21 14:38:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-21 14:38:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 14:38:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 14:38:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 14:38:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 14:38:10,653 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-21 14:38:10,653 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 14:38:10,654 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 14:38:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:38:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 14:38:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-21 14:38:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-21 14:38:10,654 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 14:38:10,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 14:38:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 14:38:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 14:38:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-21 14:38:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:38:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-21 14:38:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-21 14:38:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-21 14:38:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 14:38:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 14:38:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 14:38:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:38:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 14:38:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:38:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 14:38:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 14:38:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 14:38:10,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 14:38:10,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 14:38:10,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 14:38:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 14:38:10,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 14:38:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 14:38:10,670 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 14:38:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 14:38:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 14:38:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-21 14:38:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-21 14:38:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-21 14:38:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-21 14:38:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-21 14:38:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-21 14:38:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-21 14:38:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-21 14:38:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-21 14:38:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-21 14:38:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-21 14:38:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-21 14:38:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-21 14:38:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-21 14:38:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-21 14:38:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-21 14:38:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-21 14:38:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-21 14:38:10,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 14:38:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-21 14:38:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-21 14:38:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:38:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-21 14:38:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-21 14:38:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 14:38:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-21 14:38:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-21 14:38:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 14:38:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 14:38:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:38:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 14:38:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 14:38:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 14:38:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 14:38:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 14:38:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 14:38:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 14:38:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 14:38:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 14:38:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 14:38:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 14:38:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 14:38:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 14:38:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:38:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 14:38:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:38:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 14:38:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:38:11,471 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 14:38:12,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:38:12,356 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 14:38:12,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:38:12 BoogieIcfgContainer [2020-08-21 14:38:12,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:38:12,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:38:12,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:38:12,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:38:12,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:38:08" (1/3) ... [2020-08-21 14:38:12,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78217638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:38:12, skipping insertion in model container [2020-08-21 14:38:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:38:10" (2/3) ... [2020-08-21 14:38:12,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78217638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:38:12, skipping insertion in model container [2020-08-21 14:38:12,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:38:12" (3/3) ... [2020-08-21 14:38:12,373 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 [2020-08-21 14:38:12,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:38:12,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:38:12,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:38:12,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:38:12,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:38:12,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:38:12,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:38:12,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:38:12,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:38:12,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:38:12,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:38:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-21 14:38:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 14:38:12,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:12,477 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] [2020-08-21 14:38:12,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:12,483 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-21 14:38:12,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:12,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947551325] [2020-08-21 14:38:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,053 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 14:38:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:38:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 14:38:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:38:13,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947551325] [2020-08-21 14:38:13,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:13,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:38:13,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848796018] [2020-08-21 14:38:13,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:38:13,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:38:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:38:13,267 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-21 14:38:13,886 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 14:38:15,571 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-21 14:38:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:18,969 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-21 14:38:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:38:18,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-21 14:38:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:19,001 INFO L225 Difference]: With dead ends: 1386 [2020-08-21 14:38:19,002 INFO L226 Difference]: Without dead ends: 987 [2020-08-21 14:38:19,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:38:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-21 14:38:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-21 14:38:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 14:38:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-21 14:38:19,306 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-21 14:38:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:19,307 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-21 14:38:19,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:38:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-21 14:38:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:38:19,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:19,312 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] [2020-08-21 14:38:19,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:38:19,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-21 14:38:19,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:19,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928412204] [2020-08-21 14:38:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:38:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:38:19,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928412204] [2020-08-21 14:38:19,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:19,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:38:19,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120054697] [2020-08-21 14:38:19,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:38:19,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:38:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:38:19,648 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-21 14:38:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:23,615 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-21 14:38:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:38:23,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 14:38:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:23,628 INFO L225 Difference]: With dead ends: 1673 [2020-08-21 14:38:23,629 INFO L226 Difference]: Without dead ends: 986 [2020-08-21 14:38:23,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:38:23,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-21 14:38:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-21 14:38:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 14:38:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-21 14:38:23,719 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-21 14:38:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:23,719 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-21 14:38:23,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:38:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-21 14:38:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 14:38:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:23,726 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] [2020-08-21 14:38:23,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:38:23,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:23,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:23,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-21 14:38:23,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:23,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565253862] [2020-08-21 14:38:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:23,982 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 14:38:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:38:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 14:38:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 14:38:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 14:38:24,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565253862] [2020-08-21 14:38:24,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:24,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:38:24,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729509701] [2020-08-21 14:38:24,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:38:24,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:24,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:38:24,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:38:24,371 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-21 14:38:24,521 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 14:38:24,784 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 14:38:28,987 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-21 14:38:31,007 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-21 14:38:31,154 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 14:38:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:31,519 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-21 14:38:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 14:38:31,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 14:38:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:31,536 INFO L225 Difference]: With dead ends: 2445 [2020-08-21 14:38:31,536 INFO L226 Difference]: Without dead ends: 1743 [2020-08-21 14:38:31,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-21 14:38:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-21 14:38:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-21 14:38:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-21 14:38:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-21 14:38:31,707 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-21 14:38:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:31,709 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-21 14:38:31,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:38:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-21 14:38:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 14:38:31,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:31,719 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] [2020-08-21 14:38:31,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:38:31,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:31,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-21 14:38:31,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:31,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914789940] [2020-08-21 14:38:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:38:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 14:38:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:38:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 14:38:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 14:38:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 14:38:32,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914789940] [2020-08-21 14:38:32,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:32,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:38:32,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678098306] [2020-08-21 14:38:32,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:32,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:32,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:32,418 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-21 14:38:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:38,773 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-21 14:38:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:38:38,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 14:38:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:38,793 INFO L225 Difference]: With dead ends: 4737 [2020-08-21 14:38:38,794 INFO L226 Difference]: Without dead ends: 3284 [2020-08-21 14:38:38,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:38:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-21 14:38:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-21 14:38:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-21 14:38:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-21 14:38:39,060 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-21 14:38:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:39,062 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-21 14:38:39,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:38:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-21 14:38:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 14:38:39,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:39,071 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] [2020-08-21 14:38:39,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:38:39,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:39,072 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-21 14:38:39,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:39,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235036775] [2020-08-21 14:38:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:38:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:38:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 14:38:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:38:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 14:38:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 14:38:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 14:38:39,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235036775] [2020-08-21 14:38:39,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:39,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:38:39,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519120709] [2020-08-21 14:38:39,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:39,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:39,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:39,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:39,550 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-21 14:38:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:43,246 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-21 14:38:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:38:43,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 14:38:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:43,259 INFO L225 Difference]: With dead ends: 4462 [2020-08-21 14:38:43,259 INFO L226 Difference]: Without dead ends: 1751 [2020-08-21 14:38:43,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-21 14:38:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-21 14:38:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-21 14:38:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-21 14:38:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-21 14:38:43,405 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-21 14:38:43,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:43,405 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-21 14:38:43,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:38:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-21 14:38:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 14:38:43,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:43,410 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] [2020-08-21 14:38:43,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:38:43,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-21 14:38:43,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:43,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121607399] [2020-08-21 14:38:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:38:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:38:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:38:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 14:38:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 14:38:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 14:38:44,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121607399] [2020-08-21 14:38:44,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:44,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:38:44,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936923779] [2020-08-21 14:38:44,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:38:44,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:38:44,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:38:44,060 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-21 14:38:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:47,050 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-21 14:38:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:38:47,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 14:38:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:47,064 INFO L225 Difference]: With dead ends: 2489 [2020-08-21 14:38:47,064 INFO L226 Difference]: Without dead ends: 1716 [2020-08-21 14:38:47,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:38:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-21 14:38:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-21 14:38:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-21 14:38:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-21 14:38:47,196 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-21 14:38:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:47,197 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-21 14:38:47,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:38:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-21 14:38:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 14:38:47,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:47,202 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] [2020-08-21 14:38:47,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:38:47,202 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:47,202 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-21 14:38:47,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:47,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075864811] [2020-08-21 14:38:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:38:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:38:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:38:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 14:38:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 14:38:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 14:38:47,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075864811] [2020-08-21 14:38:47,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:47,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 14:38:47,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007508007] [2020-08-21 14:38:47,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:38:47,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:47,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:38:47,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:38:47,888 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-21 14:38:48,013 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 14:38:48,187 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 14:38:50,043 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-21 14:38:51,368 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 14:38:51,665 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-21 14:38:51,840 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 14:38:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:38:56,256 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-21 14:38:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:38:56,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 14:38:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:38:56,273 INFO L225 Difference]: With dead ends: 3355 [2020-08-21 14:38:56,273 INFO L226 Difference]: Without dead ends: 1940 [2020-08-21 14:38:56,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-21 14:38:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-21 14:38:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-21 14:38:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-21 14:38:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-21 14:38:56,668 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-21 14:38:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:38:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-21 14:38:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:38:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-21 14:38:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-21 14:38:56,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:38:56,678 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] [2020-08-21 14:38:56,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:38:56,679 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:38:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:38:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-21 14:38:56,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:38:56,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185226272] [2020-08-21 14:38:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:38:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,062 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 14:38:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:38:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:38:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:38:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 14:38:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:38:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:38:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:38:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 14:38:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:38:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:38:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 14:38:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:38:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-21 14:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:38:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-21 14:38:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:38:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-21 14:38:58,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185226272] [2020-08-21 14:38:58,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:38:58,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 14:38:58,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100927901] [2020-08-21 14:38:58,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:38:58,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:38:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:38:58,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:38:58,131 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-21 14:38:58,305 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 14:38:58,740 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-21 14:38:59,175 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-21 14:39:01,046 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101