/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-08-22 05:10:41,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:10:41,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:10:41,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:10:41,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:10:41,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:10:41,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:10:41,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:10:41,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:10:41,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:10:41,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:10:41,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:10:41,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:10:41,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:10:41,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:10:41,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:10:41,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:10:41,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:10:41,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:10:41,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:10:41,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:10:41,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:10:41,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:10:41,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:10:41,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:10:41,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:10:41,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:10:41,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:10:41,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:10:41,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:10:41,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:10:41,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:10:41,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:10:41,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:10:41,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:10:41,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:10:41,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:10:41,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:10:41,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:10:41,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:10:41,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:10:41,426 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 [2020-08-22 05:10:41,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:10:41,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:10:41,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:10:41,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:10:41,466 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:10:41,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:10:41,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:10:41,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:10:41,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:10:41,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:10:41,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:10:41,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:10:41,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:10:41,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:10:41,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:10:41,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:10:41,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:10:41,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:10:41,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:10:41,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:10:41,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:10:41,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:10:41,473 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 05:10:41,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:10:41,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:10:41,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:10:41,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:10:41,838 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:10:41,839 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 05:10:41,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6220635bb/3250fda1e5ce4bc6acc5e1167eb48625/FLAG152c7e80a [2020-08-22 05:10:42,590 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:10:42,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 05:10:42,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6220635bb/3250fda1e5ce4bc6acc5e1167eb48625/FLAG152c7e80a [2020-08-22 05:10:42,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6220635bb/3250fda1e5ce4bc6acc5e1167eb48625 [2020-08-22 05:10:42,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:10:42,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:10:42,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:42,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:10:42,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:10:42,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:42" (1/1) ... [2020-08-22 05:10:42,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461dafa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:42, skipping insertion in model container [2020-08-22 05:10:42,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:42" (1/1) ... [2020-08-22 05:10:42,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:10:42,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:10:44,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:44,306 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:10:44,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:44,636 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:10:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44 WrapperNode [2020-08-22 05:10:44,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:44,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:10:44,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:10:44,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:10:44,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... [2020-08-22 05:10:44,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:10:44,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:10:44,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:10:44,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:10:44,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:10:44,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:10:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:10:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 05:10:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 05:10:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-22 05:10:44,963 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-22 05:10:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-22 05:10:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-22 05:10:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-22 05:10:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-22 05:10:44,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-22 05:10:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-22 05:10:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-22 05:10:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-22 05:10:44,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:10:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-22 05:10:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:10:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:10:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:10:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:10:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-22 05:10:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-22 05:10:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-22 05:10:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-22 05:10:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-22 05:10:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-22 05:10:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-22 05:10:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-22 05:10:44,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-22 05:10:44,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-22 05:10:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-22 05:10:44,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-22 05:10:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-22 05:10:44,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 05:10:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 05:10:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 05:10:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 05:10:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-22 05:10:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:10:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-22 05:10:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-22 05:10:44,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-22 05:10:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-22 05:10:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-22 05:10:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:10:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-22 05:10:44,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-22 05:10:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-22 05:10:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-22 05:10:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-22 05:10:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-22 05:10:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-22 05:10:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-22 05:10:44,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-22 05:10:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-22 05:10:44,987 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-22 05:10:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-22 05:10:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-22 05:10:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-22 05:10:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-22 05:10:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-22 05:10:44,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-22 05:10:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-22 05:10:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-22 05:10:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:10:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:10:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:10:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-22 05:10:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-22 05:10:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-22 05:10:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:10:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-22 05:10:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-22 05:10:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-22 05:10:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-22 05:10:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-22 05:10:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-22 05:10:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:10:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:10:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:10:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:10:45,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-22 05:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:10:45,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:10:45,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:10:45,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:10:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:10:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:10:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:10:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:10:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:10:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 05:10:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 05:10:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-22 05:10:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-22 05:10:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-22 05:10:45,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-22 05:10:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-22 05:10:45,013 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-22 05:10:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-22 05:10:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-22 05:10:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-22 05:10:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-22 05:10:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-22 05:10:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-22 05:10:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-22 05:10:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:10:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-22 05:10:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-22 05:10:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-22 05:10:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-22 05:10:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-22 05:10:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-22 05:10:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 05:10:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-22 05:10:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-22 05:10:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:10:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-22 05:10:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-22 05:10:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 05:10:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-22 05:10:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-22 05:10:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-22 05:10:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-22 05:10:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-22 05:10:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 05:10:45,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 05:10:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 05:10:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 05:10:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-22 05:10:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-22 05:10:45,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:10:45,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:10:45,622 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:10:46,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:10:46,587 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 05:10:46,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:46 BoogieIcfgContainer [2020-08-22 05:10:46,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:10:46,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:10:46,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:10:46,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:10:46,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:10:42" (1/3) ... [2020-08-22 05:10:46,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c71f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:46, skipping insertion in model container [2020-08-22 05:10:46,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:44" (2/3) ... [2020-08-22 05:10:46,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c71f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:46, skipping insertion in model container [2020-08-22 05:10:46,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:46" (3/3) ... [2020-08-22 05:10:46,610 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 [2020-08-22 05:10:46,621 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:10:46,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:10:46,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:10:46,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:10:46,667 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:10:46,667 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:10:46,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:10:46,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:10:46,668 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:10:46,668 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:10:46,668 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:10:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-22 05:10:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 05:10:46,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:46,709 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] [2020-08-22 05:10:46,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-22 05:10:46,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:46,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973101533] [2020-08-22 05:10:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:10:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:10:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 05:10:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:10:47,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973101533] [2020-08-22 05:10:47,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:47,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:10:47,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720094994] [2020-08-22 05:10:47,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:10:47,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:47,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:10:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:10:47,408 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-22 05:10:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:10:52,495 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-22 05:10:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:10:52,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-22 05:10:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:10:52,530 INFO L225 Difference]: With dead ends: 1386 [2020-08-22 05:10:52,530 INFO L226 Difference]: Without dead ends: 987 [2020-08-22 05:10:52,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:10:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-22 05:10:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-22 05:10:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 05:10:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-22 05:10:52,735 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-22 05:10:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:10:52,736 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-22 05:10:52,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:10:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-22 05:10:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:10:52,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:52,741 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] [2020-08-22 05:10:52,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:10:52,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-22 05:10:52,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:52,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124288428] [2020-08-22 05:10:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:10:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:10:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:10:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:10:53,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124288428] [2020-08-22 05:10:53,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:53,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:10:53,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942206871] [2020-08-22 05:10:53,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:10:53,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:10:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:10:53,057 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-22 05:10:53,200 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 05:10:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:10:56,578 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-22 05:10:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:10:56,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-22 05:10:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:10:56,587 INFO L225 Difference]: With dead ends: 1673 [2020-08-22 05:10:56,587 INFO L226 Difference]: Without dead ends: 986 [2020-08-22 05:10:56,590 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 [2020-08-22 05:10:56,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-22 05:10:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-22 05:10:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 05:10:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-22 05:10:56,681 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-22 05:10:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:10:56,682 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-22 05:10:56,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:10:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-22 05:10:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 05:10:56,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:56,688 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] [2020-08-22 05:10:56,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:10:56,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:56,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-22 05:10:56,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:56,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511434921] [2020-08-22 05:10:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:10:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:10:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:10:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:10:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 05:10:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 05:10:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-22 05:10:57,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511434921] [2020-08-22 05:10:57,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:57,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:10:57,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003900183] [2020-08-22 05:10:57,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:10:57,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:10:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:10:57,293 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-22 05:11:03,337 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-22 05:11:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:03,771 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-22 05:11:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 05:11:03,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 05:11:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:03,790 INFO L225 Difference]: With dead ends: 2445 [2020-08-22 05:11:03,790 INFO L226 Difference]: Without dead ends: 1743 [2020-08-22 05:11:03,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:11:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-22 05:11:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-22 05:11:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-22 05:11:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-22 05:11:04,072 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-22 05:11:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:04,073 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-22 05:11:04,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:11:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-22 05:11:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:11:04,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:04,086 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] [2020-08-22 05:11:04,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:11:04,086 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-22 05:11:04,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:04,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512575020] [2020-08-22 05:11:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:11:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:11:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:11:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 05:11:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:11:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:11:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:11:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 05:11:04,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512575020] [2020-08-22 05:11:04,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:04,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:11:04,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856966745] [2020-08-22 05:11:04,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:11:04,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:04,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:11:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:11:04,650 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-22 05:11:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:10,017 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-22 05:11:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:11:10,018 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:11:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:10,044 INFO L225 Difference]: With dead ends: 4737 [2020-08-22 05:11:10,045 INFO L226 Difference]: Without dead ends: 3284 [2020-08-22 05:11:10,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:11:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-22 05:11:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-22 05:11:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-22 05:11:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-22 05:11:10,332 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-22 05:11:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:10,332 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-22 05:11:10,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-22 05:11:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:11:10,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:10,345 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] [2020-08-22 05:11:10,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:11:10,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-22 05:11:10,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:10,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652032965] [2020-08-22 05:11:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:11:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:11:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:11:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:11:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:11:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:11:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:11:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-22 05:11:10,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652032965] [2020-08-22 05:11:10,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:10,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:11:10,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091814642] [2020-08-22 05:11:10,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:11:10,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:11:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:11:10,832 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-22 05:11:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:14,149 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-22 05:11:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:11:14,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:11:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:14,161 INFO L225 Difference]: With dead ends: 4462 [2020-08-22 05:11:14,162 INFO L226 Difference]: Without dead ends: 1751 [2020-08-22 05:11:14,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:11:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-22 05:11:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-22 05:11:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-22 05:11:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-22 05:11:14,301 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-22 05:11:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:14,302 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-22 05:11:14,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-22 05:11:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:11:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:14,307 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] [2020-08-22 05:11:14,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:11:14,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-22 05:11:14,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:14,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668134547] [2020-08-22 05:11:14,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:11:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:11:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:11:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:11:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:11:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:11:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:11:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 05:11:14,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668134547] [2020-08-22 05:11:14,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:14,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:11:14,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671096700] [2020-08-22 05:11:14,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:11:14,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:14,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:11:14,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:11:14,802 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-22 05:11:17,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:17,400 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-22 05:11:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:11:17,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:11:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:17,414 INFO L225 Difference]: With dead ends: 2489 [2020-08-22 05:11:17,415 INFO L226 Difference]: Without dead ends: 1716 [2020-08-22 05:11:17,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:11:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-22 05:11:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-22 05:11:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-22 05:11:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-22 05:11:17,550 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-22 05:11:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:17,551 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-22 05:11:17,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:11:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-22 05:11:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:11:17,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:17,556 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] [2020-08-22 05:11:17,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:11:17,556 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-22 05:11:17,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:17,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894203209] [2020-08-22 05:11:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,816 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 05:11:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:11:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:11:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:11:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:17,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:11:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:11:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 05:11:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 05:11:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 05:11:18,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894203209] [2020-08-22 05:11:18,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:18,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 05:11:18,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822158274] [2020-08-22 05:11:18,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:11:18,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:18,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:11:18,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:11:18,160 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-22 05:11:18,384 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 05:11:20,031 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 05:11:21,163 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 05:11:21,350 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 05:11:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:25,088 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-22 05:11:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 05:11:25,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 05:11:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:25,105 INFO L225 Difference]: With dead ends: 3355 [2020-08-22 05:11:25,105 INFO L226 Difference]: Without dead ends: 1940 [2020-08-22 05:11:25,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:11:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-22 05:11:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-22 05:11:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-22 05:11:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-22 05:11:25,357 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-22 05:11:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:25,358 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-22 05:11:25,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:11:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-22 05:11:25,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 05:11:25,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:25,369 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] [2020-08-22 05:11:25,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:11:25,370 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-22 05:11:25,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:25,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310885357] [2020-08-22 05:11:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,752 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 05:11:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:11:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:11:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:11:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:11:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:11:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:11:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:11:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 05:11:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 05:11:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 05:11:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 05:11:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-22 05:11:26,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310885357] [2020-08-22 05:11:26,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:26,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 05:11:26,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619028056] [2020-08-22 05:11:26,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 05:11:26,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:26,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 05:11:26,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:11:26,819 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-22 05:11:26,941 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 05:11:27,264 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-22 05:11:27,569 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-22 05:11:29,387 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-22 05:11:30,754 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 05:11:30,954 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 05:11:35,404 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 05:11:35,655 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103