/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:59:15,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:59:15,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:59:15,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:59:15,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:59:15,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:59:15,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:59:15,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:59:15,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:59:15,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:59:15,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:59:15,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:59:15,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:59:15,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:59:15,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:59:15,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:59:15,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:59:15,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:59:15,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:59:15,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:59:15,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:59:15,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:59:15,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:59:15,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:59:15,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:59:15,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:59:15,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:59:15,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:59:15,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:59:15,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:59:15,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:59:15,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:59:15,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:59:15,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:59:15,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:59:15,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:59:15,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:59:15,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:59:15,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:59:15,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:59:15,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:59:15,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-22 05:59:15,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:59:15,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:59:15,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:59:15,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:59:15,862 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:59:15,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:59:15,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:59:15,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:59:15,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:59:15,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:59:15,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:59:15,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:59:15,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:59:15,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:59:15,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:59:15,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:59:15,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:59:15,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:59:15,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:59:15,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:59:15,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:59:15,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:59:15,870 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:59:16,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:59:16,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:59:16,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:59:16,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:59:16,285 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:59:16,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 05:59:16,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1659e9097/1e78f5bcf2694d33815e259a5c93ffe9/FLAG8ea7fcead [2020-08-22 05:59:17,102 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:59:17,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 05:59:17,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1659e9097/1e78f5bcf2694d33815e259a5c93ffe9/FLAG8ea7fcead [2020-08-22 05:59:17,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1659e9097/1e78f5bcf2694d33815e259a5c93ffe9 [2020-08-22 05:59:17,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:59:17,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:59:17,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:17,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:59:17,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:59:17,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:17" (1/1) ... [2020-08-22 05:59:17,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b70f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:17, skipping insertion in model container [2020-08-22 05:59:17,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:59:17" (1/1) ... [2020-08-22 05:59:17,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:59:17,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:59:18,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:18,554 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:59:18,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:59:18,879 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:59:18,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18 WrapperNode [2020-08-22 05:59:18,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:59:18,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:59:18,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:59:18,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:59:18,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:18,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:18,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:18,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:19,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:19,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:19,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... [2020-08-22 05:59:19,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:59:19,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:59:19,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:59:19,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:59:19,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:59:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:59:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:59:19,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 05:59:19,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 05:59:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-22 05:59:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-22 05:59:19,289 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-22 05:59:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-22 05:59:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-22 05:59:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-22 05:59:19,291 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-22 05:59:19,291 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-22 05:59:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-22 05:59:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-22 05:59:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:59:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-22 05:59:19,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:59:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:59:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:59:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-22 05:59:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-22 05:59:19,297 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-22 05:59:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-22 05:59:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-22 05:59:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-22 05:59:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-22 05:59:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-22 05:59:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-22 05:59:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-22 05:59:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-22 05:59:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-22 05:59:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-22 05:59:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-22 05:59:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-22 05:59:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-22 05:59:19,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-22 05:59:19,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-22 05:59:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-22 05:59:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-22 05:59:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-22 05:59:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-22 05:59:19,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-22 05:59:19,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-22 05:59:19,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-22 05:59:19,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 05:59:19,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 05:59:19,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 05:59:19,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 05:59:19,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-22 05:59:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:59:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-22 05:59:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-22 05:59:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-22 05:59:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-22 05:59:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-22 05:59:19,309 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-22 05:59:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-22 05:59:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-22 05:59:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-22 05:59:19,312 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:59:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:59:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-22 05:59:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-22 05:59:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-22 05:59:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:59:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-22 05:59:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-22 05:59:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-22 05:59:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-22 05:59:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:59:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-22 05:59:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-22 05:59:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-22 05:59:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-22 05:59:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-22 05:59:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-22 05:59:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:59:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:59:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:59:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:59:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:59:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 05:59:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-22 05:59:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-22 05:59:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-22 05:59:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-22 05:59:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:59:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 05:59:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:59:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:59:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:59:19,912 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:59:20,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:59:20,616 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 05:59:20,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:20 BoogieIcfgContainer [2020-08-22 05:59:20,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:59:20,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:59:20,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:59:20,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:59:20,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:59:17" (1/3) ... [2020-08-22 05:59:20,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39677c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:20, skipping insertion in model container [2020-08-22 05:59:20,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:59:18" (2/3) ... [2020-08-22 05:59:20,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39677c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:59:20, skipping insertion in model container [2020-08-22 05:59:20,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:59:20" (3/3) ... [2020-08-22 05:59:20,633 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 05:59:20,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:59:20,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:59:20,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:59:20,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:59:20,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:59:20,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:59:20,703 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:59:20,703 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:59:20,703 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:59:20,703 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:59:20,703 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:59:20,734 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-22 05:59:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 05:59:20,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:20,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:20,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:20,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-22 05:59:20,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:20,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316791587] [2020-08-22 05:59:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,276 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 05:59:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:59:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 05:59:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:59:21,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316791587] [2020-08-22 05:59:21,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:21,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:59:21,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406114496] [2020-08-22 05:59:21,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:59:21,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:59:21,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:59:21,493 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-22 05:59:21,634 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 05:59:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:26,669 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-22 05:59:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:59:26,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-22 05:59:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:26,699 INFO L225 Difference]: With dead ends: 1386 [2020-08-22 05:59:26,700 INFO L226 Difference]: Without dead ends: 987 [2020-08-22 05:59:26,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:59:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-22 05:59:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-22 05:59:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 05:59:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-22 05:59:26,938 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-22 05:59:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:26,939 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-22 05:59:26,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:59:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-22 05:59:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:59:26,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:26,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:26,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:59:26,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-22 05:59:26,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:26,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975841171] [2020-08-22 05:59:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:59:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:59:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:59:27,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975841171] [2020-08-22 05:59:27,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:27,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:59:27,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588824163] [2020-08-22 05:59:27,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:59:27,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:27,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:59:27,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:59:27,334 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-22 05:59:27,464 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 05:59:30,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:30,881 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-22 05:59:30,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:59:30,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-22 05:59:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:30,893 INFO L225 Difference]: With dead ends: 1673 [2020-08-22 05:59:30,894 INFO L226 Difference]: Without dead ends: 986 [2020-08-22 05:59:30,897 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 [2020-08-22 05:59:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-22 05:59:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-22 05:59:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 05:59:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-22 05:59:31,019 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-22 05:59:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:31,019 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-22 05:59:31,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:59:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-22 05:59:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 05:59:31,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:31,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:31,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:59:31,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-22 05:59:31,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:31,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681507366] [2020-08-22 05:59:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:59:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:59:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 05:59:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 05:59:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-22 05:59:31,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681507366] [2020-08-22 05:59:31,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:31,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:59:31,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054559291] [2020-08-22 05:59:31,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:59:31,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:31,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:59:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:59:31,534 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-22 05:59:37,268 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-22 05:59:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:37,686 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-22 05:59:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 05:59:37,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 05:59:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:37,703 INFO L225 Difference]: With dead ends: 2445 [2020-08-22 05:59:37,703 INFO L226 Difference]: Without dead ends: 1743 [2020-08-22 05:59:37,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:59:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-22 05:59:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-22 05:59:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-22 05:59:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-22 05:59:37,956 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-22 05:59:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:37,958 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-22 05:59:37,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:59:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-22 05:59:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:59:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:37,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:37,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:59:37,968 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-22 05:59:37,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:37,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049546559] [2020-08-22 05:59:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:59:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:59:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 05:59:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:59:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:59:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:59:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 05:59:38,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049546559] [2020-08-22 05:59:38,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:38,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:59:38,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269210347] [2020-08-22 05:59:38,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:59:38,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:59:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:59:38,488 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-22 05:59:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:43,417 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-22 05:59:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:59:43,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:59:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:43,442 INFO L225 Difference]: With dead ends: 4737 [2020-08-22 05:59:43,442 INFO L226 Difference]: Without dead ends: 3284 [2020-08-22 05:59:43,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:59:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-22 05:59:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-22 05:59:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-22 05:59:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-22 05:59:43,742 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-22 05:59:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:43,743 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-22 05:59:43,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:59:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-22 05:59:43,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:59:43,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:43,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:43,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:59:43,755 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-22 05:59:43,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:43,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608004398] [2020-08-22 05:59:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:43,967 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 05:59:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:59:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:59:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:59:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:59:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:59:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:59:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-22 05:59:44,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608004398] [2020-08-22 05:59:44,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:44,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:59:44,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674356865] [2020-08-22 05:59:44,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:59:44,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:44,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:59:44,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:59:44,251 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-22 05:59:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:47,807 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-22 05:59:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:59:47,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:59:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:47,818 INFO L225 Difference]: With dead ends: 4462 [2020-08-22 05:59:47,819 INFO L226 Difference]: Without dead ends: 1751 [2020-08-22 05:59:47,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:59:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-22 05:59:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-22 05:59:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-22 05:59:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-22 05:59:47,962 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-22 05:59:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:47,963 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-22 05:59:47,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:59:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-22 05:59:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:59:47,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:47,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:47,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:59:47,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:47,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:47,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-22 05:59:47,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:47,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307214463] [2020-08-22 05:59:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:59:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:59:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:59:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:59:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 05:59:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:59:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 05:59:48,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307214463] [2020-08-22 05:59:48,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:48,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:59:48,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50820848] [2020-08-22 05:59:48,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:59:48,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:59:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:59:48,582 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-22 05:59:48,717 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 05:59:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:51,588 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-22 05:59:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:59:51,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 05:59:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:51,606 INFO L225 Difference]: With dead ends: 2489 [2020-08-22 05:59:51,606 INFO L226 Difference]: Without dead ends: 1716 [2020-08-22 05:59:51,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:59:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-22 05:59:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-22 05:59:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-22 05:59:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-22 05:59:51,763 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-22 05:59:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:51,765 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-22 05:59:51,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:59:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-22 05:59:51,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 05:59:51,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:51,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:51,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:59:51,771 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:51,772 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-22 05:59:51,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:51,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951581297] [2020-08-22 05:59:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:59:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:59:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:59:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:59:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 05:59:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 05:59:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 05:59:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-22 05:59:52,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951581297] [2020-08-22 05:59:52,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:59:52,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 05:59:52,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372476986] [2020-08-22 05:59:52,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:59:52,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:59:52,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:59:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:59:52,348 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-22 05:59:54,225 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 05:59:55,428 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 05:59:55,626 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 05:59:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:59:59,283 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-22 05:59:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 05:59:59,284 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 05:59:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:59:59,302 INFO L225 Difference]: With dead ends: 3355 [2020-08-22 05:59:59,303 INFO L226 Difference]: Without dead ends: 1940 [2020-08-22 05:59:59,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:59:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-22 05:59:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-22 05:59:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-22 05:59:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-22 05:59:59,546 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-22 05:59:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:59:59,547 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-22 05:59:59,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:59:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-22 05:59:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 05:59:59,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:59:59,557 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:59:59,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:59:59,558 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:59:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:59:59,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-22 05:59:59,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:59:59,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879765696] [2020-08-22 05:59:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:59:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,882 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 05:59:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:59:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:59:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:59:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:59:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:59:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:00:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:00:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:00:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 06:00:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:00:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:00:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 06:00:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:00:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 06:00:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 06:00:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 06:00:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:00,867 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-22 06:00:00,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879765696] [2020-08-22 06:00:00,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:00,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 06:00:00,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496699577] [2020-08-22 06:00:00,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 06:00:00,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 06:00:00,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 06:00:00,871 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-22 06:00:00,996 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 06:00:01,327 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-22 06:00:01,689 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-22 06:00:03,648 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-22 06:00:05,042 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 06:00:05,270 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 06:00:05,476 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 06:00:09,953 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 06:00:10,239 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103