/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:36:14,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:36:14,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:36:14,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:36:14,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:36:14,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:36:14,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:36:14,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:36:14,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:36:14,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:36:14,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:36:14,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:36:14,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:36:14,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:36:14,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:36:14,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:36:14,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:36:14,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:36:14,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:36:14,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:36:14,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:36:14,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:36:14,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:36:14,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:36:14,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:36:14,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:36:14,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:36:14,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:36:14,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:36:14,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:36:14,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:36:14,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:36:14,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:36:14,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:36:14,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:36:14,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:36:14,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:36:14,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:36:14,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:36:14,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:36:14,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:36:14,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:36:14,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:36:14,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:36:14,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:36:14,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:36:14,262 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:36:14,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:36:14,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:36:14,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:36:14,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:36:14,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:36:14,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:36:14,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:36:14,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:36:14,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:36:14,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:36:14,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:36:14,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:36:14,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:36:14,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:36:14,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:36:14,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:36:14,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:36:14,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:36:14,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:36:14,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:36:14,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:36:14,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:36:14,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:36:14,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:36:14,574 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:36:14,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-18 22:36:14,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f3d9403/13ee195f50ec42909001b6540c4cc37f/FLAG82378ef48 [2020-08-18 22:36:15,255 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:36:15,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-18 22:36:15,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f3d9403/13ee195f50ec42909001b6540c4cc37f/FLAG82378ef48 [2020-08-18 22:36:15,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47f3d9403/13ee195f50ec42909001b6540c4cc37f [2020-08-18 22:36:15,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:36:15,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:36:15,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:36:15,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:36:15,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:36:15,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:36:15" (1/1) ... [2020-08-18 22:36:15,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa772f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:15, skipping insertion in model container [2020-08-18 22:36:15,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:36:15" (1/1) ... [2020-08-18 22:36:15,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:36:15,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:36:15,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:36:15,921 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:36:16,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:36:16,154 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:36:16,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16 WrapperNode [2020-08-18 22:36:16,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:36:16,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:36:16,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:36:16,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:36:16,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... [2020-08-18 22:36:16,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:36:16,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:36:16,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:36:16,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:36:16,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:36:16,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:36:16,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:36:16,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:36:16,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:36:16,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:36:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:36:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:36:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:36:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:36:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:36:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:36:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:36:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:36:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 22:36:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:36:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:36:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:36:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 22:36:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:36:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:36:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:36:16,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:36:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:36:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:36:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 22:36:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:36:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:36:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:36:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:36:16,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:36:16,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:36:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:36:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:36:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:36:16,396 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 22:36:16,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:36:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:36:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:36:16,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:36:17,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:36:17,673 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:36:17,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:36:17 BoogieIcfgContainer [2020-08-18 22:36:17,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:36:17,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:36:17,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:36:17,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:36:17,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:36:15" (1/3) ... [2020-08-18 22:36:17,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac9a324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:36:17, skipping insertion in model container [2020-08-18 22:36:17,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:36:16" (2/3) ... [2020-08-18 22:36:17,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac9a324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:36:17, skipping insertion in model container [2020-08-18 22:36:17,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:36:17" (3/3) ... [2020-08-18 22:36:17,688 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-18 22:36:17,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:36:17,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:36:17,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:36:17,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:36:17,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:36:17,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:36:17,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:36:17,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:36:17,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:36:17,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:36:17,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:36:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 22:36:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:36:17,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:17,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:17,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-18 22:36:17,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:17,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595638192] [2020-08-18 22:36:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,458 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:36:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:36:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:18,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595638192] [2020-08-18 22:36:18,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:18,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:36:18,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369704311] [2020-08-18 22:36:18,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:36:18,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:18,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:36:18,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:36:18,583 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-18 22:36:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:19,840 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-18 22:36:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:36:19,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:36:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:19,858 INFO L225 Difference]: With dead ends: 338 [2020-08-18 22:36:19,858 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 22:36:19,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:36:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 22:36:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-18 22:36:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 22:36:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-18 22:36:20,005 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-18 22:36:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:20,005 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-18 22:36:20,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:36:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-18 22:36:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:36:20,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:20,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:20,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:36:20,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-18 22:36:20,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:20,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990083945] [2020-08-18 22:36:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,372 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:20,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:36:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:36:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:20,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990083945] [2020-08-18 22:36:20,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:20,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:36:20,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809417956] [2020-08-18 22:36:20,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:36:20,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:20,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:36:20,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:36:20,428 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-18 22:36:20,840 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:21,810 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-18 22:36:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:36:21,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:36:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:21,814 INFO L225 Difference]: With dead ends: 267 [2020-08-18 22:36:21,814 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 22:36:21,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:36:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 22:36:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 22:36:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 22:36:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-18 22:36:21,854 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-18 22:36:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:21,855 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-18 22:36:21,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:36:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-18 22:36:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:36:21,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:21,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:21,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:36:21,857 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:21,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-18 22:36:21,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:21,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001319355] [2020-08-18 22:36:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,201 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:36:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:36:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:22,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001319355] [2020-08-18 22:36:22,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:22,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:36:22,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114624422] [2020-08-18 22:36:22,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:36:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:36:22,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:36:22,276 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-18 22:36:22,633 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:22,917 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:23,155 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:23,397 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:24,699 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-18 22:36:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:36:24,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 22:36:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:24,702 INFO L225 Difference]: With dead ends: 280 [2020-08-18 22:36:24,703 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 22:36:24,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 22:36:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 22:36:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 22:36:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-18 22:36:24,752 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-18 22:36:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:24,753 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-18 22:36:24,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:36:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-18 22:36:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 22:36:24,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:24,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:24,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:36:24,756 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-18 22:36:24,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:24,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764766585] [2020-08-18 22:36:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,023 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:36:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 22:36:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:25,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764766585] [2020-08-18 22:36:25,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:25,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:36:25,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381654443] [2020-08-18 22:36:25,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:36:25,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:36:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:36:25,172 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-18 22:36:25,460 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:26,699 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:27,361 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-18 22:36:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:27,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 22:36:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:27,367 INFO L225 Difference]: With dead ends: 377 [2020-08-18 22:36:27,367 INFO L226 Difference]: Without dead ends: 263 [2020-08-18 22:36:27,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:36:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-18 22:36:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-18 22:36:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 22:36:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-18 22:36:27,417 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-18 22:36:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:27,418 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-18 22:36:27,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:36:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-18 22:36:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 22:36:27,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:27,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:27,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:36:27,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-18 22:36:27,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:27,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333159012] [2020-08-18 22:36:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,677 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:36:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 22:36:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:27,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333159012] [2020-08-18 22:36:27,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:27,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 22:36:27,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841503011] [2020-08-18 22:36:27,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:27,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:27,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:27,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:27,841 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-18 22:36:28,280 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:28,517 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:28,747 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:29,325 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:29,584 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:29,836 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:30,861 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-18 22:36:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:30,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-18 22:36:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:30,867 INFO L225 Difference]: With dead ends: 460 [2020-08-18 22:36:30,867 INFO L226 Difference]: Without dead ends: 264 [2020-08-18 22:36:30,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 22:36:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-18 22:36:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-18 22:36:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-18 22:36:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-18 22:36:30,926 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-18 22:36:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:30,927 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-18 22:36:30,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-18 22:36:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 22:36:30,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:30,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:30,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:36:30,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-18 22:36:30,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:30,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759553806] [2020-08-18 22:36:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,279 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:31,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:36:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 22:36:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:36:31,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759553806] [2020-08-18 22:36:31,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:36:31,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:36:31,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299870975] [2020-08-18 22:36:31,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:31,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:31,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:31,394 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-18 22:36:31,758 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:32,059 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:32,301 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:32,555 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:33,098 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:33,974 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:34,285 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:34,559 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:34,837 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:35,126 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:35,370 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:36,799 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:37,208 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:37,900 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-18 22:36:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:36:37,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 22:36:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:37,906 INFO L225 Difference]: With dead ends: 789 [2020-08-18 22:36:37,907 INFO L226 Difference]: Without dead ends: 589 [2020-08-18 22:36:37,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:36:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-18 22:36:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-18 22:36:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-18 22:36:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-18 22:36:38,016 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-18 22:36:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:38,016 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-18 22:36:38,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-18 22:36:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:36:38,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:38,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:38,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:36:38,022 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-18 22:36:38,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:38,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098593235] [2020-08-18 22:36:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,284 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 22:36:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 22:36:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 22:36:38,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098593235] [2020-08-18 22:36:38,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:38,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:36:38,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979563880] [2020-08-18 22:36:38,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:36:38,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:38,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:36:38,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:36:38,582 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-18 22:36:39,135 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:39,782 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:40,341 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:40,598 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:36:40,863 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:41,092 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:41,331 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:36:41,616 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 22:36:41,891 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:42,139 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:43,830 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:44,079 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:36:44,315 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:44,532 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:44,999 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-18 22:36:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 22:36:45,004 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-18 22:36:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:45,008 INFO L225 Difference]: With dead ends: 937 [2020-08-18 22:36:45,008 INFO L226 Difference]: Without dead ends: 434 [2020-08-18 22:36:45,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 22:36:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-18 22:36:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-18 22:36:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-18 22:36:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-18 22:36:45,085 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-18 22:36:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:45,086 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-18 22:36:45,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:36:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-18 22:36:45,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 22:36:45,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:45,089 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:45,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:36:45,089 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-18 22:36:45,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:45,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63408485] [2020-08-18 22:36:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,334 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:36:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:36:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 22:36:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 22:36:45,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63408485] [2020-08-18 22:36:45,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:45,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:45,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536269110] [2020-08-18 22:36:45,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:45,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:45,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:45,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:45,522 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-18 22:36:47,188 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:47,417 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:47,649 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:47,896 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:48,268 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-18 22:36:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:48,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-18 22:36:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:48,274 INFO L225 Difference]: With dead ends: 704 [2020-08-18 22:36:48,274 INFO L226 Difference]: Without dead ends: 411 [2020-08-18 22:36:48,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:36:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-18 22:36:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-18 22:36:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 22:36:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-18 22:36:48,355 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-18 22:36:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:48,356 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-18 22:36:48,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-18 22:36:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 22:36:48,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:48,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:48,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:36:48,359 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:48,360 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-18 22:36:48,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:48,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090088131] [2020-08-18 22:36:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,623 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:36:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:36:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 22:36:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 22:36:48,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090088131] [2020-08-18 22:36:48,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:48,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:48,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408238186] [2020-08-18 22:36:48,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:48,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:48,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:48,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:48,816 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-18 22:36:49,307 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:51,123 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:51,380 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:51,611 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:51,837 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:52,133 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:52,566 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-18 22:36:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:36:52,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-18 22:36:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:52,575 INFO L225 Difference]: With dead ends: 418 [2020-08-18 22:36:52,575 INFO L226 Difference]: Without dead ends: 415 [2020-08-18 22:36:52,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:36:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-18 22:36:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-18 22:36:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 22:36:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-18 22:36:52,703 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-18 22:36:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:52,704 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-18 22:36:52,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-18 22:36:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 22:36:52,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:52,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:52,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:36:52,709 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-18 22:36:52,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:52,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428921724] [2020-08-18 22:36:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,026 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 22:36:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 22:36:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:36:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:36:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 22:36:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 22:36:53,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428921724] [2020-08-18 22:36:53,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:53,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:53,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071058024] [2020-08-18 22:36:53,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:53,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:53,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:53,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:53,240 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-18 22:36:53,565 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:54,147 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:54,928 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:55,220 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:55,467 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:55,738 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:56,024 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:56,279 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:57,529 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:58,330 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-18 22:36:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 22:36:58,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-18 22:36:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:58,336 INFO L225 Difference]: With dead ends: 922 [2020-08-18 22:36:58,336 INFO L226 Difference]: Without dead ends: 624 [2020-08-18 22:36:58,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 22:36:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-18 22:36:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-18 22:36:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-18 22:36:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-18 22:36:58,436 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-18 22:36:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:58,437 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-18 22:36:58,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-18 22:36:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 22:36:58,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:58,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:58,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:36:58,441 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:58,442 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-18 22:36:58,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:58,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142736940] [2020-08-18 22:36:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,798 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:58,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:36:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:36:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:36:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:58,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:36:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:36:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 22:36:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 22:36:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:36:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-18 22:36:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-18 22:36:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 22:36:59,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142736940] [2020-08-18 22:36:59,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:59,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:36:59,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944938543] [2020-08-18 22:36:59,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:36:59,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:59,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:36:59,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:36:59,173 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-18 22:37:00,220 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:37:00,469 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:37:02,193 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 22:37:02,440 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:37:02,667 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:37:03,106 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 22:37:04,661 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 22:37:04,917 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 22:37:05,207 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:37:05,460 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:37:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:37:06,467 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-18 22:37:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 22:37:06,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-18 22:37:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:37:06,474 INFO L225 Difference]: With dead ends: 1442 [2020-08-18 22:37:06,474 INFO L226 Difference]: Without dead ends: 999 [2020-08-18 22:37:06,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 22:37:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-18 22:37:06,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-18 22:37:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-18 22:37:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-18 22:37:06,637 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-18 22:37:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:37:06,638 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-18 22:37:06,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:37:06,638 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-18 22:37:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 22:37:06,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:37:06,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:37:06,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:37:06,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:37:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:37:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-18 22:37:06,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:37:06,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903511415] [2020-08-18 22:37:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:37:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,924 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:37:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:37:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:37:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:37:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:37:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:37:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:37:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:37:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:37:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:37:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:37:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:37:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:37:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:37:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:37:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 22:37:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 22:37:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:37:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:37:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:37:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-18 22:37:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-18 22:37:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:37:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-18 22:37:07,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903511415] [2020-08-18 22:37:07,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:37:07,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:37:07,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916437988] [2020-08-18 22:37:07,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:37:07,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:37:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:37:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:37:07,173 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-18 22:37:07,670 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:37:07,897 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:37:08,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:37:09,467 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:37:09,699 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:37:09,950 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:37:10,172 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:37:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:37:10,485 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-18 22:37:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:37:10,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-18 22:37:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:37:10,486 INFO L225 Difference]: With dead ends: 1133 [2020-08-18 22:37:10,486 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 22:37:10,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 22:37:10,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 22:37:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 22:37:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 22:37:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 22:37:10,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-18 22:37:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:37:10,493 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 22:37:10,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:37:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 22:37:10,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 22:37:10,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:37:10,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 22:37:10,643 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 22:37:10,936 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192