/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:53:12,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:53:12,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:53:12,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:53:12,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:53:12,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:53:12,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:53:12,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:53:12,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:53:12,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:53:12,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:53:12,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:53:12,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:53:12,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:53:12,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:53:12,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:53:12,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:53:12,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:53:12,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:53:12,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:53:12,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:53:12,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:53:12,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:53:12,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:53:12,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:53:12,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:53:12,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:53:12,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:53:12,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:53:12,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:53:12,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:53:12,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:53:12,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:53:12,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:53:12,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:53:12,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:53:12,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:53:12,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:53:12,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:53:12,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:53:12,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:53:12,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 21:53:12,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:53:12,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:53:12,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:53:12,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:53:12,725 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:53:12,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:53:12,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:53:12,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:53:12,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:53:12,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:53:12,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:53:12,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:53:12,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:53:12,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:53:12,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:53:12,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:53:12,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:53:12,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:53:12,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:53:12,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:53:12,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:53:12,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:53:12,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:53:12,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:53:12,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:53:12,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:53:12,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 21:53:12,731 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:53:13,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:53:13,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:53:13,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:53:13,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:53:13,067 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:53:13,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 21:53:13,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f202609/2e83d55fe87d49fe9f0b966a47455b61/FLAGfd8990fe0 [2020-08-21 21:53:13,815 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:53:13,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 21:53:13,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f202609/2e83d55fe87d49fe9f0b966a47455b61/FLAGfd8990fe0 [2020-08-21 21:53:13,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10f202609/2e83d55fe87d49fe9f0b966a47455b61 [2020-08-21 21:53:13,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:53:13,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:53:13,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:53:13,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:53:13,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:53:13,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:53:13" (1/1) ... [2020-08-21 21:53:13,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe15f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:13, skipping insertion in model container [2020-08-21 21:53:13,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:53:13" (1/1) ... [2020-08-21 21:53:13,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:53:14,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:53:15,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:53:15,311 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:53:15,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:53:15,654 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:53:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15 WrapperNode [2020-08-21 21:53:15,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:53:15,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:53:15,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:53:15,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:53:15,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... [2020-08-21 21:53:15,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:53:15,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:53:15,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:53:15,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:53:15,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:53:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:53:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:53:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 21:53:15,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 21:53:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-21 21:53:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 21:53:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 21:53:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 21:53:15,995 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-21 21:53:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:53:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-21 21:53:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 21:53:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 21:53:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 21:53:15,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 21:53:15,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 21:53:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 21:53:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 21:53:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 21:53:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 21:53:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 21:53:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-21 21:53:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-21 21:53:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-21 21:53:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-21 21:53:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-21 21:53:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-21 21:53:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-21 21:53:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-21 21:53:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-21 21:53:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-21 21:53:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-21 21:53:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-21 21:53:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-21 21:53:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-21 21:53:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 21:53:16,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 21:53:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 21:53:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-21 21:53:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-21 21:53:16,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-21 21:53:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 21:53:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 21:53:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 21:53:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 21:53:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 21:53:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 21:53:16,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-21 21:53:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 21:53:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 21:53:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 21:53:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 21:53:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-21 21:53:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 21:53:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-21 21:53:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-21 21:53:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 21:53:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-21 21:53:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 21:53:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 21:53:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 21:53:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-21 21:53:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-21 21:53:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-21 21:53:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-21 21:53:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-21 21:53:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:53:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-21 21:53:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-21 21:53:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-21 21:53:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-21 21:53:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-21 21:53:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-21 21:53:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 21:53:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-21 21:53:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-21 21:53:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:53:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-21 21:53:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-21 21:53:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 21:53:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-21 21:53:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-21 21:53:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 21:53:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 21:53:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:53:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 21:53:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 21:53:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 21:53:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 21:53:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 21:53:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 21:53:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 21:53:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 21:53:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 21:53:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 21:53:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 21:53:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 21:53:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 21:53:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:53:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 21:53:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:53:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 21:53:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:53:16,957 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 21:53:17,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:53:17,738 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 21:53:17,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:53:17 BoogieIcfgContainer [2020-08-21 21:53:17,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:53:17,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:53:17,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:53:17,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:53:17,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:53:13" (1/3) ... [2020-08-21 21:53:17,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60684e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:53:17, skipping insertion in model container [2020-08-21 21:53:17,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:53:15" (2/3) ... [2020-08-21 21:53:17,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60684e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:53:17, skipping insertion in model container [2020-08-21 21:53:17,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:53:17" (3/3) ... [2020-08-21 21:53:17,764 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 21:53:17,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:53:17,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:53:17,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:53:17,826 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:53:17,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:53:17,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:53:17,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:53:17,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:53:17,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:53:17,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:53:17,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:53:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-21 21:53:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 21:53:17,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:17,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:17,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:17,879 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-21 21:53:17,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:17,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526094182] [2020-08-21 21:53:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,453 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 21:53:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:53:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 21:53:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:53:18,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526094182] [2020-08-21 21:53:18,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:18,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:53:18,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791581682] [2020-08-21 21:53:18,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:53:18,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:18,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:53:18,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:53:18,651 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-21 21:53:19,251 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 21:53:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:23,855 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-21 21:53:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:53:23,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-21 21:53:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:23,887 INFO L225 Difference]: With dead ends: 1386 [2020-08-21 21:53:23,887 INFO L226 Difference]: Without dead ends: 987 [2020-08-21 21:53:23,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:53:23,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-21 21:53:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-21 21:53:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 21:53:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-21 21:53:24,153 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-21 21:53:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:24,163 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-21 21:53:24,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:53:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-21 21:53:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 21:53:24,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:24,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:24,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:53:24,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:24,176 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-21 21:53:24,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:24,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110721750] [2020-08-21 21:53:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:53:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:53:24,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110721750] [2020-08-21 21:53:24,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:24,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:53:24,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515856953] [2020-08-21 21:53:24,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:53:24,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:53:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:53:24,579 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-21 21:53:28,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:28,127 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-21 21:53:28,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:53:28,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 21:53:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:28,150 INFO L225 Difference]: With dead ends: 1673 [2020-08-21 21:53:28,150 INFO L226 Difference]: Without dead ends: 986 [2020-08-21 21:53:28,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:53:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-21 21:53:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-21 21:53:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 21:53:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-21 21:53:28,313 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-21 21:53:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:28,314 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-21 21:53:28,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:53:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-21 21:53:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 21:53:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:28,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:28,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:53:28,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-21 21:53:28,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:28,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291011070] [2020-08-21 21:53:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:53:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:53:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 21:53:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 21:53:28,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291011070] [2020-08-21 21:53:28,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:28,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:53:28,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392305817] [2020-08-21 21:53:28,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:53:28,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:28,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:53:28,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:53:28,885 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-21 21:53:34,627 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-21 21:53:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:35,035 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-21 21:53:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 21:53:35,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 21:53:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:35,050 INFO L225 Difference]: With dead ends: 2445 [2020-08-21 21:53:35,051 INFO L226 Difference]: Without dead ends: 1743 [2020-08-21 21:53:35,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:53:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-21 21:53:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-21 21:53:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-21 21:53:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-21 21:53:35,206 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-21 21:53:35,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:35,208 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-21 21:53:35,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:53:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-21 21:53:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 21:53:35,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:35,223 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:35,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:53:35,223 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-21 21:53:35,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:35,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840125969] [2020-08-21 21:53:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:53:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:53:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:53:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 21:53:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 21:53:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 21:53:35,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840125969] [2020-08-21 21:53:35,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:35,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:53:35,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809348587] [2020-08-21 21:53:35,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:53:35,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:53:35,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:53:35,783 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-21 21:53:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:40,508 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-21 21:53:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:53:40,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 21:53:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:40,530 INFO L225 Difference]: With dead ends: 4737 [2020-08-21 21:53:40,531 INFO L226 Difference]: Without dead ends: 3284 [2020-08-21 21:53:40,536 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 [2020-08-21 21:53:40,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-21 21:53:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-21 21:53:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-21 21:53:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-21 21:53:40,769 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-21 21:53:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:40,769 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-21 21:53:40,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:53:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-21 21:53:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 21:53:40,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:40,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:40,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:53:40,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-21 21:53:40,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:40,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355610019] [2020-08-21 21:53:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:53:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:53:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 21:53:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:53:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 21:53:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 21:53:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 21:53:41,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355610019] [2020-08-21 21:53:41,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:41,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:53:41,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521195354] [2020-08-21 21:53:41,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:53:41,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:41,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:53:41,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:53:41,126 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-21 21:53:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:44,365 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-21 21:53:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:53:44,366 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 21:53:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:44,375 INFO L225 Difference]: With dead ends: 4462 [2020-08-21 21:53:44,375 INFO L226 Difference]: Without dead ends: 1751 [2020-08-21 21:53:44,382 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 [2020-08-21 21:53:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-21 21:53:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-21 21:53:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-21 21:53:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-21 21:53:44,512 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-21 21:53:44,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:44,512 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-21 21:53:44,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:53:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-21 21:53:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 21:53:44,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:44,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:44,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:53:44,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-21 21:53:44,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:44,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253274365] [2020-08-21 21:53:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:53:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:53:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:53:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 21:53:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 21:53:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 21:53:44,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253274365] [2020-08-21 21:53:44,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:44,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:53:44,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475868542] [2020-08-21 21:53:44,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:53:44,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:44,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:53:44,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:53:44,973 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-21 21:53:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:47,566 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-21 21:53:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:53:47,570 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 21:53:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:47,581 INFO L225 Difference]: With dead ends: 2489 [2020-08-21 21:53:47,581 INFO L226 Difference]: Without dead ends: 1716 [2020-08-21 21:53:47,585 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 [2020-08-21 21:53:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-21 21:53:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-21 21:53:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-21 21:53:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-21 21:53:47,724 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-21 21:53:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:47,725 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-21 21:53:47,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:53:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-21 21:53:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 21:53:47,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:47,730 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:47,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:53:47,730 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-21 21:53:47,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:47,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203023459] [2020-08-21 21:53:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:53:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:53:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:53:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 21:53:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 21:53:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 21:53:48,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203023459] [2020-08-21 21:53:48,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:48,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 21:53:48,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291831592] [2020-08-21 21:53:48,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:53:48,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:48,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:53:48,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:53:48,307 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-21 21:53:50,154 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-21 21:53:51,276 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 21:53:51,489 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-21 21:53:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:53:55,293 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-21 21:53:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 21:53:55,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 21:53:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:53:55,313 INFO L225 Difference]: With dead ends: 3355 [2020-08-21 21:53:55,314 INFO L226 Difference]: Without dead ends: 1940 [2020-08-21 21:53:55,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:53:55,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-21 21:53:55,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-21 21:53:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-21 21:53:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-21 21:53:55,565 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-21 21:53:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:53:55,566 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-21 21:53:55,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 21:53:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-21 21:53:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-21 21:53:55,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:53:55,576 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:53:55,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:53:55,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:53:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:53:55,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-21 21:53:55,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:53:55,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408931931] [2020-08-21 21:53:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:53:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:55,921 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 21:53:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:53:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:53:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:53:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:53:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:53:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:53:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:53:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 21:53:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:53:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:53:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 21:53:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:53:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-21 21:53:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:53:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-21 21:53:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:53:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-21 21:53:56,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408931931] [2020-08-21 21:53:56,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:53:56,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 21:53:56,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66175236] [2020-08-21 21:53:56,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 21:53:56,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:53:56,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 21:53:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:53:56,946 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-21 21:53:57,095 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 21:53:57,420 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-21 21:53:57,743 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-21 21:53:59,614 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-21 21:54:01,004 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 21:54:01,218 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-21 21:54:05,851 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-21 21:54:06,077 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103