/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:02:26,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:02:26,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:02:26,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:02:26,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:02:26,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:02:26,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:02:26,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:02:26,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:02:26,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:02:26,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:02:26,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:02:26,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:02:26,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:02:26,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:02:26,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:02:26,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:02:26,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:02:26,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:02:26,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:02:26,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:02:26,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:02:26,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:02:26,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:02:26,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:02:26,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:02:26,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:02:26,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:02:26,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:02:26,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:02:26,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:02:26,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:02:26,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:02:26,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:02:26,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:02:26,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:02:26,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:02:26,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:02:26,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:02:26,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:02:26,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:02:26,809 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 [2020-09-21 12:02:26,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:02:26,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:02:26,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:02:26,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:02:26,838 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:02:26,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:02:26,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:02:26,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:02:26,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:02:26,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:02:26,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:02:26,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:02:26,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:02:26,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:02:26,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:02:26,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:02:26,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:02:26,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:02:26,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:02:26,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:02:26,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:02:26,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:02:26,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:02:26,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:02:26,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:02:26,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:02:26,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 12:02:26,843 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 12:02:27,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:02:27,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:02:27,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:02:27,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:02:27,331 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:02:27,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 12:02:27,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b692b05/6f4d64dd65f54326b3a36bf7a7d17e3d/FLAGedc5291b6 [2020-09-21 12:02:28,191 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:02:28,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 12:02:28,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b692b05/6f4d64dd65f54326b3a36bf7a7d17e3d/FLAGedc5291b6 [2020-09-21 12:02:28,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b692b05/6f4d64dd65f54326b3a36bf7a7d17e3d [2020-09-21 12:02:28,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:02:28,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:02:28,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:02:28,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:02:28,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:02:28,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:02:28" (1/1) ... [2020-09-21 12:02:28,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318ac3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:28, skipping insertion in model container [2020-09-21 12:02:28,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:02:28" (1/1) ... [2020-09-21 12:02:28,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:02:28,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:02:30,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:02:30,473 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:02:30,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:02:30,906 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:02:30,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30 WrapperNode [2020-09-21 12:02:30,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:02:30,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:02:30,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:02:30,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:02:30,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:30,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:30,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:31,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:31,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:31,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:31,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (1/1) ... [2020-09-21 12:02:31,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:02:31,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:02:31,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:02:31,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:02:31,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (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 [2020-09-21 12:02:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:02:31,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:02:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 12:02:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-09-21 12:02:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-09-21 12:02:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 12:02:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 12:02:31,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 12:02:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:02:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 12:02:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 12:02:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 12:02:31,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 12:02:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 12:02:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 12:02:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 12:02:31,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 12:02:31,203 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-09-21 12:02:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-09-21 12:02:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-09-21 12:02:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-09-21 12:02:31,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-09-21 12:02:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-09-21 12:02:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-09-21 12:02:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-09-21 12:02:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-09-21 12:02:31,205 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-09-21 12:02:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-09-21 12:02:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-09-21 12:02:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-09-21 12:02:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-09-21 12:02:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-09-21 12:02:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 12:02:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-09-21 12:02:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:02:31,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-09-21 12:02:31,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-09-21 12:02:31,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-09-21 12:02:31,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-09-21 12:02:31,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-09-21 12:02:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-09-21 12:02:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-09-21 12:02:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-09-21 12:02:31,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-09-21 12:02:31,212 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 12:02:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-09-21 12:02:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 12:02:31,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 12:02:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-09-21 12:02:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-09-21 12:02:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-09-21 12:02:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-09-21 12:02:31,214 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-09-21 12:02:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-09-21 12:02:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-09-21 12:02:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-09-21 12:02:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-09-21 12:02:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-09-21 12:02:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-09-21 12:02:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 12:02:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 12:02:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 12:02:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:02:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-21 12:02:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-09-21 12:02:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 12:02:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:02:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 12:02:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 12:02:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 12:02:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-09-21 12:02:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-09-21 12:02:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-09-21 12:02:31,291 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 12:02:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-09-21 12:02:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-09-21 12:02:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-09-21 12:02:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-09-21 12:02:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-09-21 12:02:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-09-21 12:02:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-09-21 12:02:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-09-21 12:02:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-09-21 12:02:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:02:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-09-21 12:02:31,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 12:02:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 12:02:31,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 12:02:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-09-21 12:02:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:02:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-09-21 12:02:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-09-21 12:02:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-09-21 12:02:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 12:02:31,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-09-21 12:02:31,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-09-21 12:02:31,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:02:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:02:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:02:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:02:32,527 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 12:02:33,116 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-09-21 12:02:33,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:02:33,670 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:02:33,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:02:33 BoogieIcfgContainer [2020-09-21 12:02:33,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:02:33,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:02:33,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:02:33,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:02:33,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:02:28" (1/3) ... [2020-09-21 12:02:33,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a671bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:02:33, skipping insertion in model container [2020-09-21 12:02:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:02:30" (2/3) ... [2020-09-21 12:02:33,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a671bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:02:33, skipping insertion in model container [2020-09-21 12:02:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:02:33" (3/3) ... [2020-09-21 12:02:33,687 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 12:02:33,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:02:33,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:02:33,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:02:33,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:02:33,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:02:33,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:02:33,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:02:33,765 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:02:33,765 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:02:33,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:02:33,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:02:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-09-21 12:02:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:02:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:02:33,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-21 12:02:33,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:02:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:02:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-09-21 12:02:33,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:02:33,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546786929] [2020-09-21 12:02:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:02:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:02:34,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:02:34,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:02:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 12:02:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:02:34,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,761 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:02:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,774 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:34,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:34,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:02:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,848 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:02:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,873 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,874 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,874 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:02:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,899 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,899 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,899 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:02:34,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:34,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:34,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:02:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,941 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,941 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,941 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,942 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:34,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:02:34,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:02:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:02:34,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:02:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:02:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:34,994 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:34,994 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:34,994 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:34,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:34,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:02:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:35,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:02:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:35,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:35,020 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:35,020 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:35,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:02:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:02:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:35,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:35,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:35,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:35,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:35,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:35,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:02:35,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546786929] [2020-09-21 12:02:35,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:02:35,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:02:35,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302096023] [2020-09-21 12:02:35,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:02:35,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:02:35,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:02:35,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:02:35,102 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-09-21 12:02:35,431 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:02:36,242 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 12:02:36,596 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-21 12:02:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:02:42,330 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-09-21 12:02:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:02:42,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-21 12:02:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:02:42,357 INFO L225 Difference]: With dead ends: 945 [2020-09-21 12:02:42,358 INFO L226 Difference]: Without dead ends: 492 [2020-09-21 12:02:42,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:02:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-21 12:02:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-09-21 12:02:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-21 12:02:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-09-21 12:02:42,523 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-09-21 12:02:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:02:42,524 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-09-21 12:02:42,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:02:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-09-21 12:02:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:02:42,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:02:42,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-21 12:02:42,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:02:42,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:02:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:02:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-09-21 12:02:42,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:02:42,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361948036] [2020-09-21 12:02:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:02:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:42,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:42,625 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:42,625 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:42,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:42,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:02:42,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:42,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-21 12:02:42,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:02:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:43,028 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:02:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,038 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:43,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:43,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:02:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:02:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,138 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,138 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,138 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:43,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:02:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,161 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,161 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,161 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,161 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:02:43,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:02:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:43,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:02:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,230 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,230 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,230 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:02:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,263 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:02:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:43,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:43,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:43,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:02:43,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361948036] [2020-09-21 12:02:43,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:02:43,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:02:43,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576344195] [2020-09-21 12:02:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:02:43,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:02:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:02:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:02:43,353 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-09-21 12:02:43,648 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:02:44,087 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 12:02:44,475 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:02:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:02:55,491 INFO L93 Difference]: Finished difference Result 932 states and 1215 transitions. [2020-09-21 12:02:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:02:55,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-21 12:02:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:02:55,502 INFO L225 Difference]: With dead ends: 932 [2020-09-21 12:02:55,503 INFO L226 Difference]: Without dead ends: 906 [2020-09-21 12:02:55,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:02:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-21 12:02:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 807. [2020-09-21 12:02:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-09-21 12:02:55,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1039 transitions. [2020-09-21 12:02:55,638 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1039 transitions. Word has length 54 [2020-09-21 12:02:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:02:55,639 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1039 transitions. [2020-09-21 12:02:55,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:02:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1039 transitions. [2020-09-21 12:02:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 12:02:55,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:02:55,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-21 12:02:55,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:02:55,643 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:02:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:02:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-09-21 12:02:55,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:02:55,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517876264] [2020-09-21 12:02:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:02:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:55,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:55,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:02:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:02:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-21 12:02:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,311 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:02:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:02:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,375 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,375 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,376 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,376 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:56,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:02:56,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:02:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:02:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:02:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:02:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,504 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,504 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:02:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:02:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:02:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,583 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:02:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:02:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,633 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,633 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:02:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:02:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,675 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,675 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:02:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:02:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:02:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,713 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:02:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:02:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:02:56,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:02:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:02:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:02:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:02:56,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:02:56,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:02:56,744 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:02:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:02:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:02:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:02:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:02:56,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:02:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:02:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:02:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:02:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:02:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:02:56,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517876264] [2020-09-21 12:02:56,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:02:56,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:02:56,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115285944] [2020-09-21 12:02:56,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:02:56,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:02:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:02:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:02:56,788 INFO L87 Difference]: Start difference. First operand 807 states and 1039 transitions. Second operand 6 states. [2020-09-21 12:02:57,241 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:02:57,678 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 12:02:58,101 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:03:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:05,070 INFO L93 Difference]: Finished difference Result 908 states and 1185 transitions. [2020-09-21 12:03:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:03:05,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-09-21 12:03:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:05,083 INFO L225 Difference]: With dead ends: 908 [2020-09-21 12:03:05,084 INFO L226 Difference]: Without dead ends: 905 [2020-09-21 12:03:05,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:03:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-09-21 12:03:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 806. [2020-09-21 12:03:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-21 12:03:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1037 transitions. [2020-09-21 12:03:05,244 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1037 transitions. Word has length 58 [2020-09-21 12:03:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:05,248 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 1037 transitions. [2020-09-21 12:03:05,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:03:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1037 transitions. [2020-09-21 12:03:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 12:03:05,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:05,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-21 12:03:05,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:03:05,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-09-21 12:03:05,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:05,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134260226] [2020-09-21 12:03:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:05,383 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:05,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:05,384 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 12:03:05,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:03:05,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:03:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:05,944 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:03:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,058 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:03:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:06,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:06,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:03:06,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:03:06,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:03:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,248 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:03:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:03:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:06,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:03:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:06,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:06,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:06,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:03:06,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134260226] [2020-09-21 12:03:06,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:03:06,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:03:06,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956602277] [2020-09-21 12:03:06,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:03:06,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:03:06,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:03:06,371 INFO L87 Difference]: Start difference. First operand 806 states and 1037 transitions. Second operand 6 states. [2020-09-21 12:03:06,736 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:03:07,217 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 12:03:07,626 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:03:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:14,496 INFO L93 Difference]: Finished difference Result 907 states and 1183 transitions. [2020-09-21 12:03:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:03:14,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-09-21 12:03:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:14,503 INFO L225 Difference]: With dead ends: 907 [2020-09-21 12:03:14,503 INFO L226 Difference]: Without dead ends: 904 [2020-09-21 12:03:14,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:03:14,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-09-21 12:03:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 805. [2020-09-21 12:03:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-09-21 12:03:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1035 transitions. [2020-09-21 12:03:14,585 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1035 transitions. Word has length 59 [2020-09-21 12:03:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:14,585 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 1035 transitions. [2020-09-21 12:03:14,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:03:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1035 transitions. [2020-09-21 12:03:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:03:14,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:14,587 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-21 12:03:14,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:03:14,588 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-09-21 12:03:14,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:14,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618767819] [2020-09-21 12:03:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:14,686 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:14,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:14,686 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:03:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:03:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:03:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,134 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:03:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:15,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:03:15,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:03:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,266 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:15,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,301 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,331 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,331 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,331 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,331 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:03:15,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:03:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:03:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,375 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,375 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,376 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:15,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:03:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,410 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,410 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,411 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,411 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:03:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:03:15,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:15,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:15,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:15,470 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:15,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:03:15,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618767819] [2020-09-21 12:03:15,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:03:15,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:03:15,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797712081] [2020-09-21 12:03:15,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:03:15,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:15,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:03:15,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:03:15,499 INFO L87 Difference]: Start difference. First operand 805 states and 1035 transitions. Second operand 6 states. [2020-09-21 12:03:15,870 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 12:03:16,296 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 12:03:16,659 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:03:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:03:26,644 INFO L93 Difference]: Finished difference Result 906 states and 1181 transitions. [2020-09-21 12:03:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:03:26,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-09-21 12:03:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:03:26,654 INFO L225 Difference]: With dead ends: 906 [2020-09-21 12:03:26,654 INFO L226 Difference]: Without dead ends: 903 [2020-09-21 12:03:26,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:03:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-09-21 12:03:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 804. [2020-09-21 12:03:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-21 12:03:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1033 transitions. [2020-09-21 12:03:26,748 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1033 transitions. Word has length 60 [2020-09-21 12:03:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:03:26,749 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 1033 transitions. [2020-09-21 12:03:26,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:03:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1033 transitions. [2020-09-21 12:03:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:03:26,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:03:26,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-21 12:03:26,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:03:26,753 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:03:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:03:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-09-21 12:03:26,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:03:26,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323717349] [2020-09-21 12:03:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:03:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:26,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:26,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:26,879 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:03:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:03:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:03:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:03:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,360 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:03:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:03:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:03:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:03:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:03:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:27,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:27,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:27,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:03:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,535 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,535 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:03:27,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:03:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:03:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,565 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,565 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,565 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,566 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:03:27,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:03:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:03:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:03:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:03:27,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:03:27,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:03:27,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:03:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:03:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:27,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:03:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:03:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:03:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:03:27,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 12:03:27,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 12:03:27,700 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 12:03:27,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 12:03:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:03:27,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:03:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:03:27,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 12:03:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:03:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:03:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:03:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:03:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 12:03:27,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323717349] [2020-09-21 12:03:27,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:03:27,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:03:27,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067811284] [2020-09-21 12:03:27,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:03:27,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:03:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:03:27,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:03:27,729 INFO L87 Difference]: Start difference. First operand 804 states and 1033 transitions. Second operand 6 states. [2020-09-21 12:03:28,211 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 196