/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 enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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 13:06:49,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 13:06:49,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 13:06:49,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 13:06:49,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 13:06:49,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 13:06:49,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 13:06:49,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 13:06:49,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 13:06:49,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 13:06:49,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 13:06:49,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 13:06:49,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 13:06:49,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 13:06:49,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 13:06:49,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 13:06:49,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 13:06:49,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 13:06:49,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 13:06:49,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 13:06:49,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 13:06:49,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 13:06:49,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 13:06:49,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 13:06:49,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 13:06:49,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 13:06:49,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 13:06:49,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 13:06:49,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 13:06:49,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 13:06:49,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 13:06:49,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 13:06:49,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 13:06:49,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 13:06:49,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 13:06:49,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 13:06:49,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 13:06:49,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 13:06:49,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 13:06:49,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 13:06:49,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 13:06:49,292 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 13:06:49,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 13:06:49,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 13:06:49,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 13:06:49,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 13:06:49,321 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 13:06:49,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 13:06:49,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 13:06:49,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 13:06:49,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 13:06:49,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 13:06:49,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 13:06:49,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 13:06:49,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 13:06:49,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 13:06:49,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 13:06:49,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 13:06:49,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 13:06:49,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 13:06:49,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 13:06:49,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 13:06:49,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 13:06:49,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 13:06:49,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 13:06:49,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 13:06:49,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 13:06:49,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 13:06:49,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 13:06:49,325 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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 13:06:49,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 13:06:49,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 13:06:49,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 13:06:49,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 13:06:49,811 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 13:06:49,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 13:06:49,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7077476/6abad091b6e34ff19d414a79d32dde28/FLAG5a32d4a50 [2020-09-21 13:06:50,774 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 13:06:50,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 13:06:50,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7077476/6abad091b6e34ff19d414a79d32dde28/FLAG5a32d4a50 [2020-09-21 13:06:51,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7077476/6abad091b6e34ff19d414a79d32dde28 [2020-09-21 13:06:51,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 13:06:51,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 13:06:51,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:51,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 13:06:51,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 13:06:51,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:51" (1/1) ... [2020-09-21 13:06:51,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9d0f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:51, skipping insertion in model container [2020-09-21 13:06:51,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:51" (1/1) ... [2020-09-21 13:06:51,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 13:06:51,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 13:06:52,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:52,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 13:06:53,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:53,223 INFO L208 MainTranslator]: Completed translation [2020-09-21 13:06:53,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53 WrapperNode [2020-09-21 13:06:53,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:53,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 13:06:53,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 13:06:53,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 13:06:53,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (1/1) ... [2020-09-21 13:06:53,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 13:06:53,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 13:06:53,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 13:06:53,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 13:06:53,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (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 13:06:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 13:06:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 13:06:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 13:06:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-09-21 13:06:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-09-21 13:06:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 13:06:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 13:06:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 13:06:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 13:06:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 13:06:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 13:06:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 13:06:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 13:06:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 13:06:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 13:06:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 13:06:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 13:06:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-09-21 13:06:53,580 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-09-21 13:06:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-09-21 13:06:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-09-21 13:06:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-09-21 13:06:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-09-21 13:06:53,581 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-09-21 13:06:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-09-21 13:06:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-09-21 13:06:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-09-21 13:06:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-09-21 13:06:53,582 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-09-21 13:06:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-09-21 13:06:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-09-21 13:06:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-09-21 13:06:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 13:06:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-09-21 13:06:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 13:06:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-09-21 13:06:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-09-21 13:06:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-09-21 13:06:53,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-09-21 13:06:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-09-21 13:06:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-09-21 13:06:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-09-21 13:06:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-09-21 13:06:53,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-09-21 13:06:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-09-21 13:06:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-09-21 13:06:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-09-21 13:06:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-09-21 13:06:53,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-09-21 13:06:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 13:06:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-21 13:06:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-09-21 13:06:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-09-21 13:06:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-09-21 13:06:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 13:06:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-09-21 13:06:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 13:06:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 13:06:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-09-21 13:06:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-09-21 13:06:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-09-21 13:06:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-09-21 13:06:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-09-21 13:06:53,589 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-09-21 13:06:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-09-21 13:06:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-09-21 13:06:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-09-21 13:06:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-09-21 13:06:53,590 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-09-21 13:06:53,591 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 13:06:53,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 13:06:53,591 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 13:06:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 13:06:53,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 13:06:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 13:06:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-09-21 13:06:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-09-21 13:06:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 13:06:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-21 13:06:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-09-21 13:06:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 13:06:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-09-21 13:06:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-09-21 13:06:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 13:06:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-09-21 13:06:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 13:06:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 13:06:53,594 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 13:06:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 13:06:53,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 13:06:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-09-21 13:06:53,600 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-09-21 13:06:53,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-09-21 13:06:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-09-21 13:06:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-09-21 13:06:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-09-21 13:06:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-09-21 13:06:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-09-21 13:06:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 13:06:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 13:06:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 13:06:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-09-21 13:06:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 13:06:53,604 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-09-21 13:06:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-09-21 13:06:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-09-21 13:06:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-09-21 13:06:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-09-21 13:06:53,605 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-09-21 13:06:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-09-21 13:06:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 13:06:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 13:06:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 13:06:53,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-09-21 13:06:53,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-09-21 13:06:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-09-21 13:06:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-09-21 13:06:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-09-21 13:06:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-09-21 13:06:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-09-21 13:06:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 13:06:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 13:06:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 13:06:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 13:06:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 13:06:53,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 13:06:54,502 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 13:06:55,156 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-09-21 13:06:55,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 13:06:55,675 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 13:06:55,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:55 BoogieIcfgContainer [2020-09-21 13:06:55,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 13:06:55,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 13:06:55,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 13:06:55,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 13:06:55,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 01:06:51" (1/3) ... [2020-09-21 13:06:55,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a63627d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:55, skipping insertion in model container [2020-09-21 13:06:55,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:53" (2/3) ... [2020-09-21 13:06:55,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a63627d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:55, skipping insertion in model container [2020-09-21 13:06:55,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:55" (3/3) ... [2020-09-21 13:06:55,700 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 13:06:55,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 13:06:55,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 13:06:55,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 13:06:55,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 13:06:55,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 13:06:55,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 13:06:55,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 13:06:55,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 13:06:55,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 13:06:55,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 13:06:55,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 13:06:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-09-21 13:06:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 13:06:55,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:55,822 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 13:06:55,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-09-21 13:06:55,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:55,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528739000] [2020-09-21 13:06:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 13:06:57,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 13:06:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-09-21 13:06:57,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-21 13:06:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:06:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 13:06:57,865 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 13:06:57,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:57,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:57,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:57,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-21 13:06:57,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:06:58,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 13:06:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:06:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:06:58,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 13:06:58,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:06:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:06:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 13:06:58,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 13:06:58,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:06:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:06:58,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:06:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-21 13:06:58,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 13:06:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:06:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:06:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 13:06:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 13:06:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 13:06:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 13:06:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 13:06:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:58,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:58,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:06:58,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 13:06:58,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-21 13:06:58,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528739000] [2020-09-21 13:06:58,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:58,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 13:06:58,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684856146] [2020-09-21 13:06:58,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 13:06:58,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:58,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 13:06:58,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 13:06:58,851 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 6 states. [2020-09-21 13:06:59,178 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 13:06:59,624 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 13:06:59,974 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 13:07:11,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:11,498 INFO L93 Difference]: Finished difference Result 1525 states and 2184 transitions. [2020-09-21 13:07:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 13:07:11,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-21 13:07:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:11,532 INFO L225 Difference]: With dead ends: 1525 [2020-09-21 13:07:11,533 INFO L226 Difference]: Without dead ends: 1056 [2020-09-21 13:07:11,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-09-21 13:07:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 801. [2020-09-21 13:07:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-09-21 13:07:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1031 transitions. [2020-09-21 13:07:11,767 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1031 transitions. Word has length 52 [2020-09-21 13:07:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:11,768 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 1031 transitions. [2020-09-21 13:07:11,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 13:07:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1031 transitions. [2020-09-21 13:07:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 13:07:11,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:11,773 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, 1, 1, 1, 1] [2020-09-21 13:07:11,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 13:07:11,774 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:11,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1093083277, now seen corresponding path program 1 times [2020-09-21 13:07:11,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:11,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807158382] [2020-09-21 13:07:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:11,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:12,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 13:07:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-21 13:07:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 13:07:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:13,202 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 13:07:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:13,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 13:07:13,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:13,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 13:07:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 13:07:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 13:07:13,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 13:07:13,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:13,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-21 13:07:13,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 13:07:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 13:07:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:13,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 13:07:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:13,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:07:13,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-21 13:07:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 13:07:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 13:07:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:13,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 13:07:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 13:07:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:13,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:14,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:14,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:14,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 13:07:14,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:14,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:14,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:14,062 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 13:07:14,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807158382] [2020-09-21 13:07:14,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 13:07:14,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 13:07:14,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232880416] [2020-09-21 13:07:14,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 13:07:14,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 13:07:14,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:14,067 INFO L87 Difference]: Start difference. First operand 801 states and 1031 transitions. Second operand 7 states. [2020-09-21 13:07:14,371 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 13:07:14,969 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 13:07:15,348 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-21 13:07:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:21,138 INFO L93 Difference]: Finished difference Result 1682 states and 2239 transitions. [2020-09-21 13:07:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 13:07:21,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-21 13:07:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:21,147 INFO L225 Difference]: With dead ends: 1682 [2020-09-21 13:07:21,147 INFO L226 Difference]: Without dead ends: 906 [2020-09-21 13:07:21,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-21 13:07:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 807. [2020-09-21 13:07:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-09-21 13:07:21,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1039 transitions. [2020-09-21 13:07:21,246 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1039 transitions. Word has length 56 [2020-09-21 13:07:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:21,247 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1039 transitions. [2020-09-21 13:07:21,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 13:07:21,247 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1039 transitions. [2020-09-21 13:07:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 13:07:21,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:21,250 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 13:07:21,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 13:07:21,250 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:21,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-09-21 13:07:21,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:21,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098379553] [2020-09-21 13:07:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:21,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:21,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 13:07:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-21 13:07:21,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-21 13:07:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:22,320 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 13:07:22,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:22,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:22,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:22,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-21 13:07:22,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:07:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:22,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:22,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:22,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 13:07:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 13:07:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:22,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 13:07:22,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 13:07:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:23,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 13:07:23,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:23,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:23,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 13:07:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:23,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:23,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 13:07:23,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 13:07:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:23,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 13:07:23,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:07:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:23,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:23,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:23,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:23,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 13:07:23,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:23,283 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 13:07:23,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098379553] [2020-09-21 13:07:23,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:23,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 13:07:23,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103248184] [2020-09-21 13:07:23,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 13:07:23,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:23,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 13:07:23,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 13:07:23,286 INFO L87 Difference]: Start difference. First operand 807 states and 1039 transitions. Second operand 6 states. [2020-09-21 13:07:23,529 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 13:07:23,854 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 13:07:24,164 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 13:07:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:32,887 INFO L93 Difference]: Finished difference Result 908 states and 1185 transitions. [2020-09-21 13:07:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 13:07:32,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-09-21 13:07:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:32,897 INFO L225 Difference]: With dead ends: 908 [2020-09-21 13:07:32,897 INFO L226 Difference]: Without dead ends: 905 [2020-09-21 13:07:32,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 13:07:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-09-21 13:07:33,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 806. [2020-09-21 13:07:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-21 13:07:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1037 transitions. [2020-09-21 13:07:33,065 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1037 transitions. Word has length 58 [2020-09-21 13:07:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:33,067 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 1037 transitions. [2020-09-21 13:07:33,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 13:07:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1037 transitions. [2020-09-21 13:07:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 13:07:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:33,073 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 13:07:33,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 13:07:33,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-09-21 13:07:33,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:33,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654384072] [2020-09-21 13:07:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:33,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-21 13:07:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-21 13:07:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 13:07:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,160 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 13:07:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-21 13:07:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:07:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:34,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:34,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 13:07:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 13:07:34,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 13:07:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 13:07:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 13:07:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-21 13:07:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 13:07:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:35,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:35,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:35,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 13:07:35,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:35,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:07:35,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:35,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 13:07:35,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:35,088 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 13:07:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654384072] [2020-09-21 13:07:35,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:35,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 13:07:35,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826529191] [2020-09-21 13:07:35,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 13:07:35,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:35,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 13:07:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:35,092 INFO L87 Difference]: Start difference. First operand 806 states and 1037 transitions. Second operand 7 states. [2020-09-21 13:07:35,329 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 13:07:35,753 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-09-21 13:07:36,106 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 13:07:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:42,515 INFO L93 Difference]: Finished difference Result 907 states and 1183 transitions. [2020-09-21 13:07:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 13:07:42,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-21 13:07:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:42,522 INFO L225 Difference]: With dead ends: 907 [2020-09-21 13:07:42,522 INFO L226 Difference]: Without dead ends: 904 [2020-09-21 13:07:42,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-21 13:07:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-09-21 13:07:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 805. [2020-09-21 13:07:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2020-09-21 13:07:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1035 transitions. [2020-09-21 13:07:42,609 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1035 transitions. Word has length 59 [2020-09-21 13:07:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:42,609 INFO L479 AbstractCegarLoop]: Abstraction has 805 states and 1035 transitions. [2020-09-21 13:07:42,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 13:07:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1035 transitions. [2020-09-21 13:07:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 13:07:42,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:42,611 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 13:07:42,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 13:07:42,612 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-09-21 13:07:42,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:42,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241846760] [2020-09-21 13:07:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 13:07:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-21 13:07:43,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 13:07:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:43,515 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 13:07:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:43,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 13:07:43,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:07:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:43,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 13:07:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 13:07:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 13:07:43,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 13:07:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 13:07:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 13:07:43,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 13:07:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 13:07:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 13:07:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:44,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:44,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-21 13:07:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:44,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:07:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 13:07:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:44,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:44,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 13:07:44,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:07:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:44,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 13:07:44,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:44,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:44,438 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 13:07:44,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241846760] [2020-09-21 13:07:44,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:44,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 13:07:44,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372428660] [2020-09-21 13:07:44,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 13:07:44,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:44,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 13:07:44,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 13:07:44,443 INFO L87 Difference]: Start difference. First operand 805 states and 1035 transitions. Second operand 6 states. [2020-09-21 13:07:44,686 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 13:07:45,005 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 13:07:45,337 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189