/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 19:23:04,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 19:23:04,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 19:23:04,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 19:23:04,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 19:23:04,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 19:23:04,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 19:23:04,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 19:23:04,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 19:23:04,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 19:23:04,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 19:23:04,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 19:23:04,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 19:23:04,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 19:23:04,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 19:23:04,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 19:23:04,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 19:23:04,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 19:23:04,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 19:23:04,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 19:23:04,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 19:23:04,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 19:23:04,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 19:23:04,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 19:23:04,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 19:23:04,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 19:23:04,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 19:23:04,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 19:23:04,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 19:23:04,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 19:23:04,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 19:23:04,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 19:23:04,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 19:23:04,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 19:23:04,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 19:23:04,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 19:23:04,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 19:23:04,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 19:23:04,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 19:23:04,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 19:23:04,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 19:23:04,708 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 [2020-10-13 19:23:04,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 19:23:04,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 19:23:04,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 19:23:04,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 19:23:04,734 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 19:23:04,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 19:23:04,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 19:23:04,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 19:23:04,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 19:23:04,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 19:23:04,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 19:23:04,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 19:23:04,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 19:23:04,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 19:23:04,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 19:23:04,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 19:23:04,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-13 19:23:04,739 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 19:23:05,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 19:23:05,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 19:23:05,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 19:23:05,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 19:23:05,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 19:23:05,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2020-10-13 19:23:05,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a94ffacc/e173b1f8f3ae44f2ae26ca63970d4652/FLAG885d21f27 [2020-10-13 19:23:05,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 19:23:05,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2020-10-13 19:23:06,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a94ffacc/e173b1f8f3ae44f2ae26ca63970d4652/FLAG885d21f27 [2020-10-13 19:23:06,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a94ffacc/e173b1f8f3ae44f2ae26ca63970d4652 [2020-10-13 19:23:06,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 19:23:06,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 19:23:06,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 19:23:06,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 19:23:06,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 19:23:06,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:06" (1/1) ... [2020-10-13 19:23:06,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb31d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:06, skipping insertion in model container [2020-10-13 19:23:06,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:06" (1/1) ... [2020-10-13 19:23:06,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 19:23:06,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 19:23:07,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:23:07,356 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 19:23:07,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 19:23:07,708 INFO L208 MainTranslator]: Completed translation [2020-10-13 19:23:07,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07 WrapperNode [2020-10-13 19:23:07,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 19:23:07,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 19:23:07,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 19:23:07,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 19:23:07,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (1/1) ... [2020-10-13 19:23:07,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 19:23:07,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 19:23:07,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 19:23:07,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 19:23:07,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (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 [2020-10-13 19:23:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 19:23:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 19:23:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-13 19:23:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-10-13 19:23:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 19:23:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-10-13 19:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-10-13 19:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-10-13 19:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-10-13 19:23:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-10-13 19:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-10-13 19:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-10-13 19:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-10-13 19:23:07,972 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-10-13 19:23:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_init [2020-10-13 19:23:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_raw_exit [2020-10-13 19:23:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2020-10-13 19:23:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2020-10-13 19:23:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2020-10-13 19:23:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2020-10-13 19:23:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 19:23:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-10-13 19:23:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-10-13 19:23:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-10-13 19:23:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-10-13 19:23:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-10-13 19:23:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_13 [2020-10-13 19:23:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_14 [2020-10-13 19:23:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2020-10-13 19:23:07,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-10-13 19:23:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-10-13 19:23:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-10-13 19:23:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-10-13 19:23:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-10-13 19:23:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-10-13 19:23:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-10-13 19:23:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-10-13 19:23:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-10-13 19:23:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-10-13 19:23:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-10-13 19:23:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-13 19:23:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_unregister_proto [2020-10-13 19:23:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-10-13 19:23:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-10-13 19:23:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-10-13 19:23:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-10-13 19:23:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-13 19:23:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-13 19:23:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 19:23:07,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 19:23:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 19:23:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-10-13 19:23:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-10-13 19:23:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 19:23:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-13 19:23:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-10-13 19:23:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-10-13 19:23:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-10-13 19:23:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-10-13 19:23:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_13 [2020-10-13 19:23:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-10-13 19:23:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_14 [2020-10-13 19:23:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-10-13 19:23:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-10-13 19:23:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-10-13 19:23:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-10-13 19:23:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 19:23:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 19:23:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-10-13 19:23:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-10-13 19:23:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-10-13 19:23:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 19:23:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 19:23:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 19:23:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-10-13 19:23:07,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 19:23:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 19:23:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 19:23:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-10-13 19:23:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 19:23:07,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-10-13 19:23:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 19:23:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-10-13 19:23:07,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-10-13 19:23:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-10-13 19:23:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-10-13 19:23:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-10-13 19:23:07,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2020-10-13 19:23:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-10-13 19:23:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2020-10-13 19:23:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2020-10-13 19:23:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2020-10-13 19:23:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2020-10-13 19:23:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2020-10-13 19:23:07,994 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_init [2020-10-13 19:23:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 19:23:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 19:23:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_raw_exit [2020-10-13 19:23:07,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 19:23:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2020-10-13 19:23:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 19:23:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-13 19:23:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-13 19:23:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 19:23:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-13 19:23:07,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 19:23:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-10-13 19:23:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-10-13 19:23:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-10-13 19:23:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-10-13 19:23:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-10-13 19:23:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-10-13 19:23:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-10-13 19:23:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-10-13 19:23:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-10-13 19:23:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-10-13 19:23:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-10-13 19:23:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-10-13 19:23:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 19:23:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-13 19:23:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 19:23:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 19:23:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 19:23:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 19:23:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 19:23:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 19:23:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 19:23:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 19:23:08,813 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-10-13 19:23:09,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 19:23:09,211 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 19:23:09,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:09 BoogieIcfgContainer [2020-10-13 19:23:09,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 19:23:09,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 19:23:09,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 19:23:09,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 19:23:09,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:06" (1/3) ... [2020-10-13 19:23:09,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53706d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:09, skipping insertion in model container [2020-10-13 19:23:09,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:07" (2/3) ... [2020-10-13 19:23:09,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53706d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:09, skipping insertion in model container [2020-10-13 19:23:09,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:09" (3/3) ... [2020-10-13 19:23:09,226 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2020-10-13 19:23:09,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 19:23:09,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 19:23:09,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 19:23:09,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 19:23:09,291 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 19:23:09,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 19:23:09,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 19:23:09,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 19:23:09,292 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 19:23:09,292 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 19:23:09,292 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 19:23:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2020-10-13 19:23:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 19:23:09,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:09,332 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] [2020-10-13 19:23:09,332 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1794342621, now seen corresponding path program 1 times [2020-10-13 19:23:09,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:09,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193059938] [2020-10-13 19:23:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 19:23:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 19:23:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-13 19:23:11,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:23:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 19:23:11,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 19:23:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 19:23:11,281 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 19:23:11,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:11,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 19:23:11,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:11,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:11,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:11,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:11,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:11,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:11,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:11,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:11,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 19:23:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:23:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 19:23:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 19:23:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 19:23:11,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:23:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 19:23:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 19:23:11,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 19:23:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 19:23:11,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193059938] [2020-10-13 19:23:11,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:23:11,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 19:23:11,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619938574] [2020-10-13 19:23:11,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 19:23:11,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:11,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 19:23:11,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 19:23:11,648 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 8 states. [2020-10-13 19:23:11,790 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 19:23:12,166 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-13 19:23:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:14,428 INFO L93 Difference]: Finished difference Result 586 states and 787 transitions. [2020-10-13 19:23:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 19:23:14,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-13 19:23:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:14,446 INFO L225 Difference]: With dead ends: 586 [2020-10-13 19:23:14,447 INFO L226 Difference]: Without dead ends: 336 [2020-10-13 19:23:14,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-13 19:23:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-13 19:23:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 232. [2020-10-13 19:23:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-13 19:23:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 284 transitions. [2020-10-13 19:23:14,549 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 284 transitions. Word has length 49 [2020-10-13 19:23:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:14,549 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 284 transitions. [2020-10-13 19:23:14,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 19:23:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 284 transitions. [2020-10-13 19:23:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 19:23:14,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:14,558 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] [2020-10-13 19:23:14,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 19:23:14,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash 954476345, now seen corresponding path program 1 times [2020-10-13 19:23:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:14,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248326166] [2020-10-13 19:23:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:23:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 19:23:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 19:23:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:15,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 19:23:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 19:23:15,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:15,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:23:15,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 19:23:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 19:23:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:15,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 19:23:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 19:23:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:15,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:23:15,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 19:23:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:15,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:15,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:15,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:15,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:15,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248326166] [2020-10-13 19:23:15,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:23:15,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 19:23:15,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205777070] [2020-10-13 19:23:15,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 19:23:15,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:15,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 19:23:15,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 19:23:15,517 INFO L87 Difference]: Start difference. First operand 232 states and 284 transitions. Second operand 7 states. [2020-10-13 19:23:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:18,606 INFO L93 Difference]: Finished difference Result 614 states and 788 transitions. [2020-10-13 19:23:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 19:23:18,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-13 19:23:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:18,622 INFO L225 Difference]: With dead ends: 614 [2020-10-13 19:23:18,623 INFO L226 Difference]: Without dead ends: 595 [2020-10-13 19:23:18,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-13 19:23:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-13 19:23:18,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 403. [2020-10-13 19:23:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-13 19:23:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 499 transitions. [2020-10-13 19:23:18,738 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 499 transitions. Word has length 50 [2020-10-13 19:23:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:18,739 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 499 transitions. [2020-10-13 19:23:18,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 19:23:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 499 transitions. [2020-10-13 19:23:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 19:23:18,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:18,743 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] [2020-10-13 19:23:18,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 19:23:18,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1262942570, now seen corresponding path program 1 times [2020-10-13 19:23:18,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:18,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941501232] [2020-10-13 19:23:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:20,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:20,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 19:23:20,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2173 [2020-10-13 19:23:20,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:23:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 19:23:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 19:23:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:21,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 19:23:21,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:21,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:21,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:21,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:21,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:23:21,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 19:23:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 19:23:21,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 19:23:21,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 19:23:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 19:23:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:21,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941501232] [2020-10-13 19:23:21,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 19:23:21,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 19:23:21,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368880057] [2020-10-13 19:23:21,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 19:23:21,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:21,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 19:23:21,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 19:23:21,304 INFO L87 Difference]: Start difference. First operand 403 states and 499 transitions. Second operand 8 states. [2020-10-13 19:23:21,955 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:23:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:23,639 INFO L93 Difference]: Finished difference Result 982 states and 1253 transitions. [2020-10-13 19:23:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 19:23:23,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 19:23:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:23,645 INFO L225 Difference]: With dead ends: 982 [2020-10-13 19:23:23,646 INFO L226 Difference]: Without dead ends: 601 [2020-10-13 19:23:23,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-13 19:23:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-13 19:23:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 404. [2020-10-13 19:23:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-13 19:23:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 500 transitions. [2020-10-13 19:23:23,725 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 500 transitions. Word has length 53 [2020-10-13 19:23:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:23,726 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 500 transitions. [2020-10-13 19:23:23,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 19:23:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 500 transitions. [2020-10-13 19:23:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 19:23:23,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:23,736 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] [2020-10-13 19:23:23,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 19:23:23,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:23,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1049213171, now seen corresponding path program 1 times [2020-10-13 19:23:23,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:23,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611679276] [2020-10-13 19:23:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:25,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:25,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 19:23:25,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-13 19:23:25,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 19:23:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:23:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:26,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 19:23:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:26,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:23:26,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:26,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:26,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:26,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 19:23:26,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 19:23:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 19:23:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 19:23:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 19:23:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:23:26,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:26,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:26,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611679276] [2020-10-13 19:23:26,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:23:26,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 19:23:26,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104242252] [2020-10-13 19:23:26,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 19:23:26,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:26,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 19:23:26,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 19:23:26,416 INFO L87 Difference]: Start difference. First operand 404 states and 500 transitions. Second operand 11 states. [2020-10-13 19:23:27,866 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-13 19:23:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:29,693 INFO L93 Difference]: Finished difference Result 1002 states and 1275 transitions. [2020-10-13 19:23:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 19:23:29,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 19:23:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:29,703 INFO L225 Difference]: With dead ends: 1002 [2020-10-13 19:23:29,704 INFO L226 Difference]: Without dead ends: 620 [2020-10-13 19:23:29,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-13 19:23:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-13 19:23:29,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 408. [2020-10-13 19:23:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-13 19:23:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 504 transitions. [2020-10-13 19:23:29,770 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 504 transitions. Word has length 57 [2020-10-13 19:23:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:29,771 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 504 transitions. [2020-10-13 19:23:29,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 19:23:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 504 transitions. [2020-10-13 19:23:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 19:23:29,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:29,776 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 19:23:29,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 19:23:29,777 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:29,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:29,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1272941564, now seen corresponding path program 2 times [2020-10-13 19:23:29,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:29,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843416601] [2020-10-13 19:23:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 19:23:32,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2874 [2020-10-13 19:23:32,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 19:23:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:23:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:32,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 19:23:32,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:32,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:32,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:32,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:32,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:32,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:32,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:32,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:32,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:32,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:32,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 19:23:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 19:23:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 19:23:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 19:23:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:33,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:33,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:23:33,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:33,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843416601] [2020-10-13 19:23:33,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:23:33,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 19:23:33,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390990168] [2020-10-13 19:23:33,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 19:23:33,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:33,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 19:23:33,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 19:23:33,191 INFO L87 Difference]: Start difference. First operand 408 states and 504 transitions. Second operand 12 states. [2020-10-13 19:23:34,580 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:36,568 INFO L93 Difference]: Finished difference Result 1014 states and 1288 transitions. [2020-10-13 19:23:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 19:23:36,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-13 19:23:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:36,576 INFO L225 Difference]: With dead ends: 1014 [2020-10-13 19:23:36,576 INFO L226 Difference]: Without dead ends: 628 [2020-10-13 19:23:36,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-13 19:23:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-13 19:23:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 412. [2020-10-13 19:23:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 19:23:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 509 transitions. [2020-10-13 19:23:36,640 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 509 transitions. Word has length 61 [2020-10-13 19:23:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:36,641 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 509 transitions. [2020-10-13 19:23:36,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 19:23:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 509 transitions. [2020-10-13 19:23:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 19:23:36,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:36,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:23:36,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 19:23:36,645 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1150464645, now seen corresponding path program 3 times [2020-10-13 19:23:36,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:36,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019267683] [2020-10-13 19:23:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:39,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:39,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 19:23:39,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:39,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-10-13 19:23:39,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 19:23:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:23:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:39,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 19:23:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:23:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:40,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:40,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:40,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 19:23:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:40,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 19:23:40,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 19:23:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 19:23:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 19:23:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:40,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:40,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:40,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019267683] [2020-10-13 19:23:40,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:23:40,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 19:23:40,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441448729] [2020-10-13 19:23:40,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 19:23:40,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 19:23:40,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 19:23:40,326 INFO L87 Difference]: Start difference. First operand 412 states and 509 transitions. Second operand 13 states. [2020-10-13 19:23:41,280 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:23:41,792 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:42,041 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:44,213 INFO L93 Difference]: Finished difference Result 1026 states and 1303 transitions. [2020-10-13 19:23:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 19:23:44,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-13 19:23:44,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:44,218 INFO L225 Difference]: With dead ends: 1026 [2020-10-13 19:23:44,219 INFO L226 Difference]: Without dead ends: 636 [2020-10-13 19:23:44,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2020-10-13 19:23:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-13 19:23:44,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 416. [2020-10-13 19:23:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-13 19:23:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 514 transitions. [2020-10-13 19:23:44,271 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 514 transitions. Word has length 65 [2020-10-13 19:23:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:44,272 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 514 transitions. [2020-10-13 19:23:44,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 19:23:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 514 transitions. [2020-10-13 19:23:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 19:23:44,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:44,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:23:44,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 19:23:44,274 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash 892506994, now seen corresponding path program 4 times [2020-10-13 19:23:44,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:44,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449814207] [2020-10-13 19:23:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:47,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 19:23:47,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3665 [2020-10-13 19:23:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 19:23:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:23:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:48,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:23:48,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:48,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:23:48,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:48,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:48,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:48,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:48,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 19:23:48,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 19:23:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 19:23:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 19:23:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 19:23:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:48,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:48,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:48,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:48,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449814207] [2020-10-13 19:23:48,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:23:48,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 19:23:48,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698565503] [2020-10-13 19:23:48,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 19:23:48,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 19:23:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 19:23:48,516 INFO L87 Difference]: Start difference. First operand 416 states and 514 transitions. Second operand 14 states. [2020-10-13 19:23:48,790 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:23:49,711 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:23:50,007 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:23:50,248 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:23:50,424 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:23:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:23:52,475 INFO L93 Difference]: Finished difference Result 1038 states and 1318 transitions. [2020-10-13 19:23:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 19:23:52,478 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-13 19:23:52,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:23:52,482 INFO L225 Difference]: With dead ends: 1038 [2020-10-13 19:23:52,483 INFO L226 Difference]: Without dead ends: 644 [2020-10-13 19:23:52,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 19:23:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-10-13 19:23:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 420. [2020-10-13 19:23:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-13 19:23:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 519 transitions. [2020-10-13 19:23:52,534 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 519 transitions. Word has length 69 [2020-10-13 19:23:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:23:52,535 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 519 transitions. [2020-10-13 19:23:52,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 19:23:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 519 transitions. [2020-10-13 19:23:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 19:23:52,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:23:52,537 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:23:52,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 19:23:52,537 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:23:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:23:52,537 INFO L82 PathProgramCache]: Analyzing trace with hash 510002665, now seen corresponding path program 5 times [2020-10-13 19:23:52,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:23:52,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27754625] [2020-10-13 19:23:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:23:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 19:23:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:23:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3081 [2020-10-13 19:23:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:23:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 19:23:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:23:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:55,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 19:23:55,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:55,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:55,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:23:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:23:55,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 19:23:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:23:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:23:55,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:23:55,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:23:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:55,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:55,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:23:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:23:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:55,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:23:55,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:23:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:23:55,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:23:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:56,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:56,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 19:23:56,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:23:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-13 19:23:56,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 19:23:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:23:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 19:23:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 19:23:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:23:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:23:56,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:23:56,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:23:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:23:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:23:56,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27754625] [2020-10-13 19:23:56,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:23:56,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 19:23:56,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276486536] [2020-10-13 19:23:56,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 19:23:56,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:23:56,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 19:23:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-13 19:23:56,369 INFO L87 Difference]: Start difference. First operand 420 states and 519 transitions. Second operand 15 states. [2020-10-13 19:23:57,312 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:23:57,550 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:57,827 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:58,066 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:23:58,407 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:00,474 INFO L93 Difference]: Finished difference Result 1050 states and 1333 transitions. [2020-10-13 19:24:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 19:24:00,475 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2020-10-13 19:24:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:00,479 INFO L225 Difference]: With dead ends: 1050 [2020-10-13 19:24:00,480 INFO L226 Difference]: Without dead ends: 652 [2020-10-13 19:24:00,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 19:24:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-10-13 19:24:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 424. [2020-10-13 19:24:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 19:24:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 524 transitions. [2020-10-13 19:24:00,550 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 524 transitions. Word has length 73 [2020-10-13 19:24:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:00,551 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 524 transitions. [2020-10-13 19:24:00,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 19:24:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 524 transitions. [2020-10-13 19:24:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 19:24:00,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:00,553 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:00,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 19:24:00,553 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:00,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2095225632, now seen corresponding path program 6 times [2020-10-13 19:24:00,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:00,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067552286] [2020-10-13 19:24:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:03,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:03,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 19:24:03,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3232 [2020-10-13 19:24:03,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 19:24:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:03,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:03,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:03,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:03,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 19:24:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:03,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:24:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:24:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:04,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:04,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:24:04,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:04,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:04,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:04,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:24:04,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:04,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:04,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:24:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:24:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 19:24:04,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 19:24:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 19:24:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 19:24:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 19:24:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 19:24:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:04,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:04,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:04,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067552286] [2020-10-13 19:24:04,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:04,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 19:24:04,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922246155] [2020-10-13 19:24:04,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 19:24:04,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:04,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 19:24:04,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-13 19:24:04,486 INFO L87 Difference]: Start difference. First operand 424 states and 524 transitions. Second operand 16 states. [2020-10-13 19:24:04,766 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 19:24:05,469 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:24:05,995 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:06,237 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:06,416 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:06,589 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:06,773 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:08,945 INFO L93 Difference]: Finished difference Result 1062 states and 1348 transitions. [2020-10-13 19:24:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 19:24:08,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-13 19:24:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:08,951 INFO L225 Difference]: With dead ends: 1062 [2020-10-13 19:24:08,951 INFO L226 Difference]: Without dead ends: 660 [2020-10-13 19:24:08,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=405, Invalid=1077, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 19:24:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-13 19:24:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 428. [2020-10-13 19:24:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 19:24:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 529 transitions. [2020-10-13 19:24:09,003 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 529 transitions. Word has length 77 [2020-10-13 19:24:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:09,004 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 529 transitions. [2020-10-13 19:24:09,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 19:24:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 529 transitions. [2020-10-13 19:24:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 19:24:09,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:09,006 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:09,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 19:24:09,006 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -292655017, now seen corresponding path program 7 times [2020-10-13 19:24:09,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:09,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95041475] [2020-10-13 19:24:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 19:24:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:12,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:24:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:24:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:13,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:13,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:13,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:13,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:13,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:13,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:13,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:24:13,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:13,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 19:24:13,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 19:24:13,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 19:24:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:13,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 19:24:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 19:24:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:13,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:13,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:13,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:13,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95041475] [2020-10-13 19:24:13,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:13,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 19:24:13,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150159926] [2020-10-13 19:24:13,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 19:24:13,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 19:24:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-13 19:24:13,413 INFO L87 Difference]: Start difference. First operand 428 states and 529 transitions. Second operand 17 states. [2020-10-13 19:24:13,693 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:24:14,448 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:14,687 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:14,992 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:15,252 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:15,434 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:15,614 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:15,794 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:15,983 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:18,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:18,304 INFO L93 Difference]: Finished difference Result 1074 states and 1363 transitions. [2020-10-13 19:24:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 19:24:18,305 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-10-13 19:24:18,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:18,308 INFO L225 Difference]: With dead ends: 1074 [2020-10-13 19:24:18,308 INFO L226 Difference]: Without dead ends: 668 [2020-10-13 19:24:18,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=474, Invalid=1248, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 19:24:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-10-13 19:24:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 432. [2020-10-13 19:24:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-13 19:24:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 534 transitions. [2020-10-13 19:24:18,368 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 534 transitions. Word has length 81 [2020-10-13 19:24:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:18,368 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 534 transitions. [2020-10-13 19:24:18,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 19:24:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 534 transitions. [2020-10-13 19:24:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 19:24:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:18,370 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 19:24:18,371 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash -619780018, now seen corresponding path program 8 times [2020-10-13 19:24:18,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:18,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277473345] [2020-10-13 19:24:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 19:24:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3999 [2020-10-13 19:24:22,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 19:24:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:22,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 19:24:22,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:22,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:22,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 19:24:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 19:24:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:22,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:22,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277473345] [2020-10-13 19:24:22,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:22,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 19:24:22,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755096916] [2020-10-13 19:24:22,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 19:24:22,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 19:24:22,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-13 19:24:22,989 INFO L87 Difference]: Start difference. First operand 432 states and 534 transitions. Second operand 18 states. [2020-10-13 19:24:24,030 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:24:24,298 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:24,617 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:24,887 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:25,071 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:25,250 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:25,438 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:25,626 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:28,221 INFO L93 Difference]: Finished difference Result 1086 states and 1378 transitions. [2020-10-13 19:24:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 19:24:28,222 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-13 19:24:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:28,226 INFO L225 Difference]: With dead ends: 1086 [2020-10-13 19:24:28,226 INFO L226 Difference]: Without dead ends: 676 [2020-10-13 19:24:28,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=549, Invalid=1431, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 19:24:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-10-13 19:24:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 436. [2020-10-13 19:24:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-13 19:24:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 539 transitions. [2020-10-13 19:24:28,282 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 539 transitions. Word has length 85 [2020-10-13 19:24:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:28,283 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 539 transitions. [2020-10-13 19:24:28,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 19:24:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 539 transitions. [2020-10-13 19:24:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 19:24:28,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:28,285 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:28,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 19:24:28,286 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash 571772101, now seen corresponding path program 9 times [2020-10-13 19:24:28,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:28,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711642337] [2020-10-13 19:24:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:29,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 19:24:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4715 [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:24:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:33,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:33,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:33,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 19:24:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 19:24:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:33,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711642337] [2020-10-13 19:24:33,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:33,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 19:24:33,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626088556] [2020-10-13 19:24:33,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 19:24:33,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 19:24:33,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-13 19:24:33,649 INFO L87 Difference]: Start difference. First operand 436 states and 539 transitions. Second operand 19 states. [2020-10-13 19:24:33,924 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:24:34,748 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:35,008 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:35,334 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:35,607 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:35,790 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:35,974 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:36,167 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:36,368 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:36,571 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:36,781 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:24:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:39,424 INFO L93 Difference]: Finished difference Result 1098 states and 1393 transitions. [2020-10-13 19:24:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 19:24:39,425 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-13 19:24:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:39,429 INFO L225 Difference]: With dead ends: 1098 [2020-10-13 19:24:39,429 INFO L226 Difference]: Without dead ends: 684 [2020-10-13 19:24:39,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=630, Invalid=1626, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 19:24:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-13 19:24:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 440. [2020-10-13 19:24:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-10-13 19:24:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 544 transitions. [2020-10-13 19:24:39,518 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 544 transitions. Word has length 89 [2020-10-13 19:24:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 544 transitions. [2020-10-13 19:24:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 19:24:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 544 transitions. [2020-10-13 19:24:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 19:24:39,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:39,521 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:39,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 19:24:39,522 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1815420348, now seen corresponding path program 10 times [2020-10-13 19:24:39,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:39,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132999912] [2020-10-13 19:24:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 19:24:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:44,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:44,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:44,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:44,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:44,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 19:24:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 19:24:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 19:24:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:45,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:45,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:45,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132999912] [2020-10-13 19:24:45,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:45,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 19:24:45,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5238075] [2020-10-13 19:24:45,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 19:24:45,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:45,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 19:24:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-13 19:24:45,227 INFO L87 Difference]: Start difference. First operand 440 states and 544 transitions. Second operand 20 states. [2020-10-13 19:24:47,732 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:48,020 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:48,308 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:48,619 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:48,927 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-13 19:24:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:24:52,011 INFO L93 Difference]: Finished difference Result 1110 states and 1408 transitions. [2020-10-13 19:24:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 19:24:52,013 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-13 19:24:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:24:52,017 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 19:24:52,017 INFO L226 Difference]: Without dead ends: 692 [2020-10-13 19:24:52,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=717, Invalid=1833, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 19:24:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-10-13 19:24:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 444. [2020-10-13 19:24:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-13 19:24:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 549 transitions. [2020-10-13 19:24:52,084 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 549 transitions. Word has length 93 [2020-10-13 19:24:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:24:52,085 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 549 transitions. [2020-10-13 19:24:52,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 19:24:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 549 transitions. [2020-10-13 19:24:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 19:24:52,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:24:52,087 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:24:52,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 19:24:52,087 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:24:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:24:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1591321805, now seen corresponding path program 11 times [2020-10-13 19:24:52,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:24:52,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047160581] [2020-10-13 19:24:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:24:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 19:24:57,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:24:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:24:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:24:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:24:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:24:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:24:57,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:24:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:24:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:24:57,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:24:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:24:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 19:24:57,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 19:24:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 19:24:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:24:57,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:24:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:24:57,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:24:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:24:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:24:57,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:24:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:24:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:24:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:24:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:24:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:24:57,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047160581] [2020-10-13 19:24:57,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:24:57,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 19:24:57,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261513002] [2020-10-13 19:24:57,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 19:24:57,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:24:57,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 19:24:57,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-13 19:24:57,911 INFO L87 Difference]: Start difference. First operand 444 states and 549 transitions. Second operand 21 states. [2020-10-13 19:24:58,201 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 19:24:59,065 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:24:59,339 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:59,692 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:24:59,977 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:00,159 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:00,338 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:00,715 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:01,279 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:25:04,114 INFO L93 Difference]: Finished difference Result 1122 states and 1423 transitions. [2020-10-13 19:25:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 19:25:04,115 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 97 [2020-10-13 19:25:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:25:04,119 INFO L225 Difference]: With dead ends: 1122 [2020-10-13 19:25:04,119 INFO L226 Difference]: Without dead ends: 700 [2020-10-13 19:25:04,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=810, Invalid=2052, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 19:25:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-13 19:25:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 448. [2020-10-13 19:25:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-13 19:25:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 554 transitions. [2020-10-13 19:25:04,190 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 554 transitions. Word has length 97 [2020-10-13 19:25:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:25:04,190 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 554 transitions. [2020-10-13 19:25:04,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 19:25:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 554 transitions. [2020-10-13 19:25:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 19:25:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:25:04,192 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:25:04,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 19:25:04,192 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:25:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:25:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1472070954, now seen corresponding path program 12 times [2020-10-13 19:25:04,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:25:04,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202817648] [2020-10-13 19:25:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:25:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:25:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 19:25:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:25:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:25:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:09,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:09,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:09,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:25:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:25:09,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:25:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:25:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 19:25:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 19:25:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:10,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:10,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:25:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:25:10,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202817648] [2020-10-13 19:25:10,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:25:10,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 19:25:10,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480801370] [2020-10-13 19:25:10,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 19:25:10,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:25:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 19:25:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-13 19:25:10,254 INFO L87 Difference]: Start difference. First operand 448 states and 554 transitions. Second operand 22 states. [2020-10-13 19:25:11,290 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:25:11,919 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:12,199 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:12,370 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:12,547 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:12,723 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:12,907 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:13,094 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:13,292 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:13,492 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:13,705 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:13,967 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:25:16,723 INFO L93 Difference]: Finished difference Result 1134 states and 1438 transitions. [2020-10-13 19:25:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 19:25:16,723 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 101 [2020-10-13 19:25:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:25:16,728 INFO L225 Difference]: With dead ends: 1134 [2020-10-13 19:25:16,728 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 19:25:16,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=909, Invalid=2283, Unknown=0, NotChecked=0, Total=3192 [2020-10-13 19:25:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 19:25:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 452. [2020-10-13 19:25:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-13 19:25:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 559 transitions. [2020-10-13 19:25:16,798 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 559 transitions. Word has length 101 [2020-10-13 19:25:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:25:16,799 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 559 transitions. [2020-10-13 19:25:16,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 19:25:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 559 transitions. [2020-10-13 19:25:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 19:25:16,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:25:16,801 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:25:16,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 19:25:16,801 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:25:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:25:16,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1173478305, now seen corresponding path program 13 times [2020-10-13 19:25:16,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:25:16,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299452578] [2020-10-13 19:25:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:25:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:16,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:25:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 19:25:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:25:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:25:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:25:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:25:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:25:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:22,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:25:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 19:25:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:25:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 19:25:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 19:25:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:22,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:22,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:25:22,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299452578] [2020-10-13 19:25:22,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:25:22,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 19:25:22,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481829110] [2020-10-13 19:25:22,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 19:25:22,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:25:22,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 19:25:22,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-10-13 19:25:22,955 INFO L87 Difference]: Start difference. First operand 452 states and 559 transitions. Second operand 23 states. [2020-10-13 19:25:23,253 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 19:25:24,346 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:24,702 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:24,987 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:25,174 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:25,355 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:25,542 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:25,743 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:25,946 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:26,158 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:26,368 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:26,581 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:26,800 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:27,033 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:25:29,840 INFO L93 Difference]: Finished difference Result 1146 states and 1453 transitions. [2020-10-13 19:25:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 19:25:29,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 105 [2020-10-13 19:25:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:25:29,844 INFO L225 Difference]: With dead ends: 1146 [2020-10-13 19:25:29,844 INFO L226 Difference]: Without dead ends: 716 [2020-10-13 19:25:29,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1014, Invalid=2526, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 19:25:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-13 19:25:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 456. [2020-10-13 19:25:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-13 19:25:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 564 transitions. [2020-10-13 19:25:29,916 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 564 transitions. Word has length 105 [2020-10-13 19:25:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:25:29,916 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 564 transitions. [2020-10-13 19:25:29,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 19:25:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 564 transitions. [2020-10-13 19:25:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 19:25:29,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:25:29,919 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:25:29,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 19:25:29,919 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:25:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:25:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1328046440, now seen corresponding path program 14 times [2020-10-13 19:25:29,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:25:29,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638449681] [2020-10-13 19:25:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:25:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:34,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:34,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 19:25:34,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:25:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:35,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:25:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:25:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:25:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:35,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:25:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:25:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:25:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:25:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 19:25:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:35,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 19:25:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:35,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:25:36,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638449681] [2020-10-13 19:25:36,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:25:36,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 19:25:36,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553095814] [2020-10-13 19:25:36,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 19:25:36,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:25:36,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 19:25:36,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-13 19:25:36,006 INFO L87 Difference]: Start difference. First operand 456 states and 564 transitions. Second operand 24 states. [2020-10-13 19:25:36,309 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:25:36,557 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 19:25:37,124 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:37,373 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:37,681 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:37,947 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:38,139 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:38,332 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:38,529 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:38,733 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:38,944 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:39,162 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:39,383 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:39,609 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:39,838 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:40,070 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:40,307 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:25:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:25:42,601 INFO L93 Difference]: Finished difference Result 1158 states and 1468 transitions. [2020-10-13 19:25:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 19:25:42,602 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 109 [2020-10-13 19:25:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:25:42,606 INFO L225 Difference]: With dead ends: 1158 [2020-10-13 19:25:42,606 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 19:25:42,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1125, Invalid=2781, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 19:25:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 19:25:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 460. [2020-10-13 19:25:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-13 19:25:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 569 transitions. [2020-10-13 19:25:42,679 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 569 transitions. Word has length 109 [2020-10-13 19:25:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:25:42,679 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 569 transitions. [2020-10-13 19:25:42,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 19:25:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 569 transitions. [2020-10-13 19:25:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 19:25:42,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:25:42,681 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:25:42,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 19:25:42,681 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:25:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:25:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -593162737, now seen corresponding path program 15 times [2020-10-13 19:25:42,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:25:42,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056650891] [2020-10-13 19:25:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:25:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:44,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 19:25:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:25:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 19:25:47,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:25:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 19:25:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:25:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:25:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:25:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:25:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:25:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:25:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:25:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:25:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:47,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:25:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:25:47,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 19:25:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:25:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:25:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:48,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:48,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 19:25:48,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:25:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-13 19:25:48,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 19:25:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:25:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 19:25:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 19:25:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:25:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:25:48,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:25:48,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:25:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:25:48,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056650891] [2020-10-13 19:25:48,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:25:48,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 19:25:48,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480799451] [2020-10-13 19:25:48,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 19:25:48,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:25:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 19:25:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-13 19:25:48,840 INFO L87 Difference]: Start difference. First operand 460 states and 569 transitions. Second operand 25 states. [2020-10-13 19:25:49,150 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 19:25:50,110 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:25:50,430 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:50,815 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:51,110 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:51,295 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:51,476 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:51,665 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:51,857 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:52,052 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:52,257 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:52,468 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:52,687 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:52,914 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:53,149 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:53,391 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:53,633 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:25:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:25:56,875 INFO L93 Difference]: Finished difference Result 1170 states and 1483 transitions. [2020-10-13 19:25:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 19:25:56,876 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2020-10-13 19:25:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:25:56,880 INFO L225 Difference]: With dead ends: 1170 [2020-10-13 19:25:56,880 INFO L226 Difference]: Without dead ends: 732 [2020-10-13 19:25:56,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1242, Invalid=3048, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 19:25:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-10-13 19:25:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 464. [2020-10-13 19:25:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-13 19:25:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 574 transitions. [2020-10-13 19:25:56,960 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 574 transitions. Word has length 113 [2020-10-13 19:25:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:25:56,961 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 574 transitions. [2020-10-13 19:25:56,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 19:25:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 574 transitions. [2020-10-13 19:25:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 19:25:56,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:25:56,963 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:25:56,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 19:25:56,964 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:25:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:25:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903494, now seen corresponding path program 16 times [2020-10-13 19:25:56,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:25:56,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585375914] [2020-10-13 19:25:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:25:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:25:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:57,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:25:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 19:26:02,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:26:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 19:26:02,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:26:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 19:26:02,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:26:02,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:26:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:26:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:26:02,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:02,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:02,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:26:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:26:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:26:02,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:26:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 19:26:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:26:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 19:26:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 19:26:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:03,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:26:03,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585375914] [2020-10-13 19:26:03,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:26:03,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 19:26:03,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252387494] [2020-10-13 19:26:03,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 19:26:03,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:26:03,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 19:26:03,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-10-13 19:26:03,249 INFO L87 Difference]: Start difference. First operand 464 states and 574 transitions. Second operand 26 states. [2020-10-13 19:26:03,568 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:26:04,556 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:04,857 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:05,239 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:05,545 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:05,736 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:05,920 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:06,123 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:06,316 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:06,516 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:06,727 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:06,951 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:07,171 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:07,399 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:07,635 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:07,879 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:08,125 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:08,381 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:26:11,612 INFO L93 Difference]: Finished difference Result 1182 states and 1498 transitions. [2020-10-13 19:26:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 19:26:11,617 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 117 [2020-10-13 19:26:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:26:11,620 INFO L225 Difference]: With dead ends: 1182 [2020-10-13 19:26:11,620 INFO L226 Difference]: Without dead ends: 740 [2020-10-13 19:26:11,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1365, Invalid=3327, Unknown=0, NotChecked=0, Total=4692 [2020-10-13 19:26:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2020-10-13 19:26:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 468. [2020-10-13 19:26:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-13 19:26:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 579 transitions. [2020-10-13 19:26:11,691 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 579 transitions. Word has length 117 [2020-10-13 19:26:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:26:11,692 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 579 transitions. [2020-10-13 19:26:11,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 19:26:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 579 transitions. [2020-10-13 19:26:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 19:26:11,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:26:11,695 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:26:11,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 19:26:11,695 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:26:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:26:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash 594408061, now seen corresponding path program 17 times [2020-10-13 19:26:11,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:26:11,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961282889] [2020-10-13 19:26:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:26:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:11,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:26:16,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:16,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:26:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:26:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:26:16,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:26:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:16,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:16,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:16,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:16,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:16,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:16,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:26:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:26:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:17,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 19:26:17,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 19:26:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:26:18,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:26:18,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961282889] [2020-10-13 19:26:18,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:26:18,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 19:26:18,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578547301] [2020-10-13 19:26:18,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 19:26:18,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:26:18,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 19:26:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2020-10-13 19:26:18,122 INFO L87 Difference]: Start difference. First operand 468 states and 579 transitions. Second operand 27 states. [2020-10-13 19:26:18,452 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 19:26:19,435 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 19:26:20,112 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:20,419 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:20,603 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:20,788 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:20,971 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:21,162 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:21,356 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:21,558 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:21,766 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:21,975 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:22,193 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:22,418 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:22,646 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:22,881 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:23,126 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:23,376 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:23,639 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-13 19:26:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:26:26,727 INFO L93 Difference]: Finished difference Result 1194 states and 1513 transitions. [2020-10-13 19:26:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 19:26:26,728 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 121 [2020-10-13 19:26:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:26:26,732 INFO L225 Difference]: With dead ends: 1194 [2020-10-13 19:26:26,732 INFO L226 Difference]: Without dead ends: 748 [2020-10-13 19:26:26,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1494, Invalid=3618, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 19:26:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-13 19:26:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 472. [2020-10-13 19:26:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-13 19:26:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 584 transitions. [2020-10-13 19:26:26,797 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 584 transitions. Word has length 121 [2020-10-13 19:26:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:26:26,797 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 584 transitions. [2020-10-13 19:26:26,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 19:26:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 584 transitions. [2020-10-13 19:26:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 19:26:26,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:26:26,799 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:26:26,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 19:26:26,800 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:26:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:26:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1300961420, now seen corresponding path program 18 times [2020-10-13 19:26:26,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:26:26,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967081304] [2020-10-13 19:26:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:26:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:29,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:26:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 19:26:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:26:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:31,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:31,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:31,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:31,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:26:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:32,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:32,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:26:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:32,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:32,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:26:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:32,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 19:26:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 19:26:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 19:26:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:33,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 19:26:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:33,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:33,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:33,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 19:26:33,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967081304] [2020-10-13 19:26:33,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 19:26:33,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 19:26:33,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81575125] [2020-10-13 19:26:33,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 19:26:33,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 19:26:33,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 19:26:33,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2020-10-13 19:26:33,410 INFO L87 Difference]: Start difference. First operand 472 states and 584 transitions. Second operand 28 states. [2020-10-13 19:26:33,740 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 19:26:34,771 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 19:26:35,089 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:35,499 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:35,820 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:36,013 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:36,198 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:36,393 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:36,775 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:36,986 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:37,205 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:37,429 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:37,670 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:37,903 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:38,145 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:38,395 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:38,664 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:38,929 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:39,198 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 19:26:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 19:26:42,716 INFO L93 Difference]: Finished difference Result 1206 states and 1528 transitions. [2020-10-13 19:26:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 19:26:42,717 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 125 [2020-10-13 19:26:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 19:26:42,721 INFO L225 Difference]: With dead ends: 1206 [2020-10-13 19:26:42,721 INFO L226 Difference]: Without dead ends: 756 [2020-10-13 19:26:42,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1629, Invalid=3921, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 19:26:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-13 19:26:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 476. [2020-10-13 19:26:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-13 19:26:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 589 transitions. [2020-10-13 19:26:42,795 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 589 transitions. Word has length 125 [2020-10-13 19:26:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 19:26:42,795 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 589 transitions. [2020-10-13 19:26:42,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 19:26:42,795 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 589 transitions. [2020-10-13 19:26:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 19:26:42,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 19:26:42,797 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 19:26:42,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 19:26:42,797 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 19:26:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 19:26:42,798 INFO L82 PathProgramCache]: Analyzing trace with hash -897939221, now seen corresponding path program 19 times [2020-10-13 19:26:42,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 19:26:42,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981583201] [2020-10-13 19:26:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 19:26:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:45,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 19:26:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 19:26:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 19:26:47,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 19:26:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 19:26:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:48,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 19:26:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 19:26:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 19:26:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 19:26:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:48,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 19:26:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 19:26:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 19:26:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 19:26:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 19:26:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking...