/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=0.2 --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 04:22:04,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:22:04,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:22:04,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:22:04,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:22:04,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:22:04,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:22:04,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:22:04,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:22:04,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:22:04,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:22:04,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:22:04,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:22:04,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:22:04,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:22:04,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:22:04,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:22:04,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:22:04,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:22:04,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:22:04,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:22:04,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:22:04,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:22:04,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:22:04,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:22:04,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:22:04,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:22:04,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:22:04,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:22:04,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:22:04,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:22:04,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:22:04,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:22:04,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:22:04,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:22:04,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:22:04,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:22:04,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:22:04,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:22:04,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:22:04,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:22:04,300 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 04:22:04,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:22:04,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:22:04,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:22:04,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:22:04,338 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:22:04,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:22:04,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:22:04,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:22:04,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:22:04,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:22:04,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:22:04,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:22:04,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:22:04,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:22:04,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:22:04,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:22:04,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:22:04,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:22:04,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:22:04,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:22:04,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:22:04,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 04:22:04,344 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 04:22:04,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:22:04,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:22:04,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:22:04,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:22:04,654 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:22:04,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 04:22:04,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4091a62/6563877bcc4d4487b04c90f1876b9b7a/FLAGa4bc5d4e0 [2020-08-22 04:22:05,423 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:22:05,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-22 04:22:05,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4091a62/6563877bcc4d4487b04c90f1876b9b7a/FLAGa4bc5d4e0 [2020-08-22 04:22:05,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f4091a62/6563877bcc4d4487b04c90f1876b9b7a [2020-08-22 04:22:05,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:22:05,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:22:05,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:22:05,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:22:05,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:22:05,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:22:05" (1/1) ... [2020-08-22 04:22:05,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c854b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:05, skipping insertion in model container [2020-08-22 04:22:05,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:22:05" (1/1) ... [2020-08-22 04:22:05,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:22:05,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:22:06,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:22:06,940 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:22:07,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:22:07,190 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:22:07,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07 WrapperNode [2020-08-22 04:22:07,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:22:07,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:22:07,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:22:07,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:22:07,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (1/1) ... [2020-08-22 04:22:07,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:22:07,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:22:07,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:22:07,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:22:07,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (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 04:22:07,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:22:07,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:22:07,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 04:22:07,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 04:22:07,547 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-22 04:22:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-22 04:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-22 04:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-22 04:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-22 04:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-22 04:22:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-22 04:22:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-22 04:22:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-22 04:22:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-22 04:22:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:22:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-22 04:22:07,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 04:22:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 04:22:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 04:22:07,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 04:22:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 04:22:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 04:22:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 04:22:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 04:22:07,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 04:22:07,558 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-22 04:22:07,558 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-22 04:22:07,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-22 04:22:07,559 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-22 04:22:07,559 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-22 04:22:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-22 04:22:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-22 04:22:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-22 04:22:07,560 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-22 04:22:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-22 04:22:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-22 04:22:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-22 04:22:07,561 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-22 04:22:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-22 04:22:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-22 04:22:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-22 04:22:07,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 04:22:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:22:07,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-22 04:22:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-22 04:22:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-22 04:22:07,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-22 04:22:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-22 04:22:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-22 04:22:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-22 04:22:07,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-22 04:22:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-22 04:22:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-22 04:22:07,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-22 04:22:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-22 04:22:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-22 04:22:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 04:22:07,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 04:22:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 04:22:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 04:22:07,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-22 04:22:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 04:22:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-22 04:22:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-22 04:22:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-22 04:22:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-22 04:22:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-22 04:22:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 04:22:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-22 04:22:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-22 04:22:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-22 04:22:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-22 04:22:07,572 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-22 04:22:07,574 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-22 04:22:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-22 04:22:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-22 04:22:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-22 04:22:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-22 04:22:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-22 04:22:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-22 04:22:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-22 04:22:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-22 04:22:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-22 04:22:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-22 04:22:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-22 04:22:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-22 04:22:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-22 04:22:07,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 04:22:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 04:22:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:22:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 04:22:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-22 04:22:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-22 04:22:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-22 04:22:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:22:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-22 04:22:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-22 04:22:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-22 04:22:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-22 04:22:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-22 04:22:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-22 04:22:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-22 04:22:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-22 04:22:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-22 04:22:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:22:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-22 04:22:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-22 04:22:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-22 04:22:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:22:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-22 04:22:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-22 04:22:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-22 04:22:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-22 04:22:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-22 04:22:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:22:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-22 04:22:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-22 04:22:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-22 04:22:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-22 04:22:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-22 04:22:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-22 04:22:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:22:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 04:22:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:22:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 04:22:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:22:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:22:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-22 04:22:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:22:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 04:22:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 04:22:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 04:22:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 04:22:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 04:22:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 04:22:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 04:22:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 04:22:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-22 04:22:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 04:22:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-22 04:22:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-22 04:22:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-22 04:22:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-22 04:22:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-22 04:22:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-22 04:22:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-22 04:22:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-22 04:22:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-22 04:22:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-22 04:22:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-22 04:22:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-22 04:22:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-22 04:22:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-22 04:22:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-22 04:22:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-22 04:22:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-22 04:22:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-22 04:22:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:22:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-22 04:22:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-22 04:22:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-22 04:22:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-22 04:22:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-22 04:22:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-22 04:22:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-22 04:22:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-22 04:22:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-22 04:22:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:22:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-22 04:22:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-22 04:22:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-22 04:22:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-22 04:22:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-22 04:22:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 04:22:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 04:22:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:22:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-22 04:22:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-22 04:22:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-22 04:22:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-22 04:22:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-22 04:22:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 04:22:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 04:22:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 04:22:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 04:22:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-22 04:22:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-22 04:22:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-22 04:22:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 04:22:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:22:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 04:22:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:22:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 04:22:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:22:08,200 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 04:22:08,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:22:08,939 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 04:22:08,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:08 BoogieIcfgContainer [2020-08-22 04:22:08,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:22:08,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:22:08,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:22:08,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:22:08,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:22:05" (1/3) ... [2020-08-22 04:22:08,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b715c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:08, skipping insertion in model container [2020-08-22 04:22:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:22:07" (2/3) ... [2020-08-22 04:22:08,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b715c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:22:08, skipping insertion in model container [2020-08-22 04:22:08,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:22:08" (3/3) ... [2020-08-22 04:22:08,959 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 04:22:08,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:22:09,006 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:22:09,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:22:09,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:22:09,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:22:09,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:22:09,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:22:09,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:22:09,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:22:09,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:22:09,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:22:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-22 04:22:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 04:22:09,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:09,118 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 04:22:09,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-22 04:22:09,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:09,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576620017] [2020-08-22 04:22:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,640 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 04:22:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:22:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 04:22:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:09,786 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 04:22:09,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576620017] [2020-08-22 04:22:09,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:09,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:22:09,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989942123] [2020-08-22 04:22:09,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:22:09,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:09,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:22:09,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:22:09,812 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-22 04:22:10,364 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 04:22:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:15,130 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-22 04:22:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:22:15,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-22 04:22:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:15,159 INFO L225 Difference]: With dead ends: 1386 [2020-08-22 04:22:15,159 INFO L226 Difference]: Without dead ends: 987 [2020-08-22 04:22:15,169 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 04:22:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-22 04:22:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-22 04:22:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 04:22:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-22 04:22:15,353 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-22 04:22:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:15,353 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-22 04:22:15,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:22:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-22 04:22:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 04:22:15,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:15,358 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 04:22:15,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:22:15,359 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:15,359 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-22 04:22:15,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:15,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840012527] [2020-08-22 04:22:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:22:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:15,792 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 04:22:15,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840012527] [2020-08-22 04:22:15,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:15,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:22:15,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229285973] [2020-08-22 04:22:15,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:22:15,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:22:15,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:22:15,797 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-22 04:22:16,006 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 04:22:16,165 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 04:22:16,874 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-22 04:22:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:19,584 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-22 04:22:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:22:19,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-22 04:22:19,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:19,596 INFO L225 Difference]: With dead ends: 1673 [2020-08-22 04:22:19,596 INFO L226 Difference]: Without dead ends: 986 [2020-08-22 04:22:19,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:22:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-22 04:22:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-22 04:22:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-22 04:22:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-22 04:22:19,723 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-22 04:22:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:19,723 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-22 04:22:19,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:22:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-22 04:22:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 04:22:19,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:19,734 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 04:22:19,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:22:19,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-22 04:22:19,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:19,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342718586] [2020-08-22 04:22:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,021 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 04:22:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:22:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:22:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:20,358 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 04:22:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342718586] [2020-08-22 04:22:20,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:20,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:22:20,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670135971] [2020-08-22 04:22:20,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:22:20,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:22:20,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:22:20,361 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-22 04:22:20,506 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 04:22:24,753 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-22 04:22:26,640 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-22 04:22:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:27,092 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-22 04:22:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 04:22:27,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 04:22:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:27,111 INFO L225 Difference]: With dead ends: 2445 [2020-08-22 04:22:27,111 INFO L226 Difference]: Without dead ends: 1743 [2020-08-22 04:22:27,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:22:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-22 04:22:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-22 04:22:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-22 04:22:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-22 04:22:27,252 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-22 04:22:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:27,255 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-22 04:22:27,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:22:27,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-22 04:22:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:22:27,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:27,268 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 04:22:27,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:22:27,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:27,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-22 04:22:27,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:27,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298845496] [2020-08-22 04:22:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:22:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:22:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 04:22:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:22:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:27,848 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 04:22:27,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298845496] [2020-08-22 04:22:27,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:27,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:22:27,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959630311] [2020-08-22 04:22:27,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:22:27,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:22:27,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:22:27,851 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-22 04:22:28,268 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-22 04:22:29,230 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 04:22:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:33,722 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-22 04:22:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:22:33,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 04:22:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:33,747 INFO L225 Difference]: With dead ends: 4737 [2020-08-22 04:22:33,747 INFO L226 Difference]: Without dead ends: 3284 [2020-08-22 04:22:33,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 04:22:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-22 04:22:33,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-22 04:22:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-22 04:22:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-22 04:22:33,997 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-22 04:22:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:33,998 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-22 04:22:33,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:22:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-22 04:22:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:22:34,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:34,007 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 04:22:34,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:22:34,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:34,008 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-22 04:22:34,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:34,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613186830] [2020-08-22 04:22:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:22:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:22:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:22:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:22:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 04:22:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:22:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:34,469 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 04:22:34,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613186830] [2020-08-22 04:22:34,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:34,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:22:34,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356541665] [2020-08-22 04:22:34,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:22:34,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:22:34,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:22:34,476 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-22 04:22:34,604 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 04:22:34,912 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-22 04:22:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:38,258 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-22 04:22:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:22:38,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 04:22:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:38,269 INFO L225 Difference]: With dead ends: 4462 [2020-08-22 04:22:38,269 INFO L226 Difference]: Without dead ends: 1751 [2020-08-22 04:22:38,276 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 04:22:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-22 04:22:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-22 04:22:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-22 04:22:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-22 04:22:38,396 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-22 04:22:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:38,397 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-22 04:22:38,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:22:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-22 04:22:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:22:38,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:38,401 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 04:22:38,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:22:38,401 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:38,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-22 04:22:38,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:38,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853560703] [2020-08-22 04:22:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:22:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:22:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 04:22:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:22:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:38,828 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 04:22:38,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853560703] [2020-08-22 04:22:38,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:38,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:22:38,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831757201] [2020-08-22 04:22:38,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:22:38,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:38,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:22:38,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:22:38,831 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-22 04:22:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:41,516 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-22 04:22:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:22:41,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-22 04:22:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:41,529 INFO L225 Difference]: With dead ends: 2489 [2020-08-22 04:22:41,530 INFO L226 Difference]: Without dead ends: 1716 [2020-08-22 04:22:41,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:22:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-22 04:22:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-22 04:22:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-22 04:22:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-22 04:22:41,667 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-22 04:22:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:41,668 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-22 04:22:41,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:22:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-22 04:22:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 04:22:41,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:41,673 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 04:22:41,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:22:41,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-22 04:22:41,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:41,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405553004] [2020-08-22 04:22:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:41,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:22:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:22:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 04:22:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 04:22:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:42,281 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 04:22:42,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405553004] [2020-08-22 04:22:42,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:42,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 04:22:42,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703584100] [2020-08-22 04:22:42,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:22:42,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:42,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:22:42,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:22:42,284 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-22 04:22:44,383 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-22 04:22:45,587 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 04:22:45,809 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-22 04:22:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:22:50,035 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-22 04:22:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:22:50,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 04:22:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:22:50,055 INFO L225 Difference]: With dead ends: 3355 [2020-08-22 04:22:50,055 INFO L226 Difference]: Without dead ends: 1940 [2020-08-22 04:22:50,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:22:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-22 04:22:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-22 04:22:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-22 04:22:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-22 04:22:50,281 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-22 04:22:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:22:50,282 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-22 04:22:50,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:22:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-22 04:22:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 04:22:50,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:22:50,292 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 04:22:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:22:50,293 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:22:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:22:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-22 04:22:50,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:22:50,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248789015] [2020-08-22 04:22:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:22:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,673 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-22 04:22:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:22:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:22:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:22:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:22:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:22:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:22:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:22:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 04:22:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:22:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:22:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 04:22:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:22:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 04:22:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:22:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-22 04:22:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:22:51,769 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 04:22:51,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248789015] [2020-08-22 04:22:51,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:22:51,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 04:22:51,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227047420] [2020-08-22 04:22:51,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:22:51,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:22:51,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:22:51,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:22:51,772 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-22 04:22:51,941 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-22 04:22:52,350 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-22 04:22:52,762 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-22 04:22:54,620 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-22 04:22:56,080 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-22 04:22:56,308 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101