/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:24:14,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:24:14,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:24:14,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:24:14,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:24:14,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:24:14,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:24:14,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:24:14,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:24:14,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:24:14,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:24:14,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:24:14,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:24:14,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:24:14,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:24:14,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:24:14,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:24:14,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:24:14,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:24:14,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:24:14,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:24:14,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:24:14,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:24:14,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:24:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:24:14,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:24:14,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:24:14,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:24:14,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:24:14,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:24:14,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:24:14,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:24:14,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:24:14,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:24:14,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:24:14,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:24:14,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:24:14,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:24:14,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:24:14,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:24:14,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:24:14,297 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 15:24:14,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:24:14,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:24:14,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:24:14,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:24:14,355 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:24:14,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:24:14,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:24:14,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:24:14,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:24:14,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:24:14,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:24:14,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:24:14,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:24:14,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:24:14,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:24:14,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:24:14,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:24:14,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:24:14,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:24:14,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:24:14,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:24:14,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:24:14,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:24:14,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:24:14,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:24:14,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:24:14,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:24:14,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:24:14,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:24:14,361 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 -> false [2020-08-18 15:24:14,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:24:14,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:24:14,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:24:14,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:24:14,711 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:24:14,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 15:24:14,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aacf66c5/bb4e5d094bf644968fc5db3c448091c9/FLAGa13bf4c50 [2020-08-18 15:24:15,358 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:24:15,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product61.cil.c [2020-08-18 15:24:15,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aacf66c5/bb4e5d094bf644968fc5db3c448091c9/FLAGa13bf4c50 [2020-08-18 15:24:15,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3aacf66c5/bb4e5d094bf644968fc5db3c448091c9 [2020-08-18 15:24:15,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:24:15,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:24:15,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:24:15,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:24:15,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:24:15,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:24:15" (1/1) ... [2020-08-18 15:24:15,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d31571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:15, skipping insertion in model container [2020-08-18 15:24:15,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:24:15" (1/1) ... [2020-08-18 15:24:15,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:24:15,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:24:16,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:24:16,177 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:24:16,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:24:16,315 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:24:16,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16 WrapperNode [2020-08-18 15:24:16,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:24:16,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:24:16,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:24:16,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:24:16,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (1/1) ... [2020-08-18 15:24:16,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:24:16,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:24:16,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:24:16,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:24:16,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (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 15:24:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:24:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:24:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:24:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:24:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:24:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:24:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:24:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:24:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:24:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:24:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:24:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:24:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:24:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:24:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:24:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:24:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:24:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:24:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:24:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:24:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:24:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:24:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:24:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:24:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:24:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:24:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:24:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:24:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:24:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:24:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:24:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 15:24:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 15:24:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 15:24:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:24:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:24:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:24:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:24:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:24:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:24:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:24:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:24:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:24:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:24:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:24:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:24:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:24:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:24:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:24:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:24:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:24:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:24:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:24:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:24:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:24:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:24:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:24:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:24:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:24:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:24:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:24:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:24:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:24:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:24:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:24:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:24:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:24:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:24:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:24:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:24:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:24:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:24:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:24:17,644 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:24:17,645 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:24:17,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:24:17 BoogieIcfgContainer [2020-08-18 15:24:17,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:24:17,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:24:17,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:24:17,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:24:17,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:24:15" (1/3) ... [2020-08-18 15:24:17,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483bf5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:24:17, skipping insertion in model container [2020-08-18 15:24:17,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:24:16" (2/3) ... [2020-08-18 15:24:17,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483bf5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:24:17, skipping insertion in model container [2020-08-18 15:24:17,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:24:17" (3/3) ... [2020-08-18 15:24:17,659 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product61.cil.c [2020-08-18 15:24:17,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:24:17,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:24:17,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:24:17,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:24:17,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:24:17,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:24:17,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:24:17,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:24:17,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:24:17,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:24:17,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:24:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-18 15:24:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 15:24:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:17,743 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:24:17,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -748532366, now seen corresponding path program 1 times [2020-08-18 15:24:17,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:17,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156885710] [2020-08-18 15:24:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,448 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:24:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:24:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:24:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:18,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156885710] [2020-08-18 15:24:18,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:18,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:24:18,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165293352] [2020-08-18 15:24:18,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:24:18,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:18,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:24:18,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:24:18,611 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-18 15:24:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:19,756 INFO L93 Difference]: Finished difference Result 357 states and 456 transitions. [2020-08-18 15:24:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:24:19,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 15:24:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:19,774 INFO L225 Difference]: With dead ends: 357 [2020-08-18 15:24:19,775 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 15:24:19,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:24:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 15:24:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 15:24:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 15:24:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-18 15:24:19,890 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 59 [2020-08-18 15:24:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:19,891 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-18 15:24:19,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:24:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-18 15:24:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 15:24:19,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:19,896 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:24:19,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:24:19,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:19,897 INFO L82 PathProgramCache]: Analyzing trace with hash -733015768, now seen corresponding path program 1 times [2020-08-18 15:24:19,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:19,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109847454] [2020-08-18 15:24:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,301 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:20,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:24:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:24:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:20,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109847454] [2020-08-18 15:24:20,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:20,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:24:20,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277652415] [2020-08-18 15:24:20,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:24:20,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:24:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:24:20,443 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 9 states. [2020-08-18 15:24:20,925 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:21,233 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:21,467 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:21,713 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:23,280 INFO L93 Difference]: Finished difference Result 330 states and 411 transitions. [2020-08-18 15:24:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:24:23,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 15:24:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:23,284 INFO L225 Difference]: With dead ends: 330 [2020-08-18 15:24:23,285 INFO L226 Difference]: Without dead ends: 195 [2020-08-18 15:24:23,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:24:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-18 15:24:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 163. [2020-08-18 15:24:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 15:24:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 192 transitions. [2020-08-18 15:24:23,335 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 192 transitions. Word has length 64 [2020-08-18 15:24:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:23,336 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 192 transitions. [2020-08-18 15:24:23,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:24:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 192 transitions. [2020-08-18 15:24:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 15:24:23,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:23,338 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:24:23,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:24:23,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1142393912, now seen corresponding path program 1 times [2020-08-18 15:24:23,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:23,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546367614] [2020-08-18 15:24:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,633 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:24:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:24:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 15:24:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:24:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:23,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546367614] [2020-08-18 15:24:23,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:23,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:24:23,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834296023] [2020-08-18 15:24:23,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:24:23,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:23,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:24:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:24:23,760 INFO L87 Difference]: Start difference. First operand 163 states and 192 transitions. Second operand 6 states. [2020-08-18 15:24:24,228 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:25,413 INFO L93 Difference]: Finished difference Result 317 states and 394 transitions. [2020-08-18 15:24:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:24:25,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-08-18 15:24:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:25,417 INFO L225 Difference]: With dead ends: 317 [2020-08-18 15:24:25,417 INFO L226 Difference]: Without dead ends: 200 [2020-08-18 15:24:25,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:24:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-18 15:24:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2020-08-18 15:24:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 15:24:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 180 transitions. [2020-08-18 15:24:25,456 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 180 transitions. Word has length 78 [2020-08-18 15:24:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:25,457 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 180 transitions. [2020-08-18 15:24:25,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:24:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 180 transitions. [2020-08-18 15:24:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 15:24:25,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:25,459 INFO L422 BasicCegarLoop]: trace histogram [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 15:24:25,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:24:25,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash 330531379, now seen corresponding path program 1 times [2020-08-18 15:24:25,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:25,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676026420] [2020-08-18 15:24:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,812 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:24:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 15:24:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:24:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:25,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676026420] [2020-08-18 15:24:25,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:25,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:24:25,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941320001] [2020-08-18 15:24:25,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:24:25,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:25,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:24:25,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:24:25,934 INFO L87 Difference]: Start difference. First operand 154 states and 180 transitions. Second operand 7 states. [2020-08-18 15:24:26,294 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:27,749 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:28,338 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2020-08-18 15:24:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:24:28,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-18 15:24:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:28,344 INFO L225 Difference]: With dead ends: 424 [2020-08-18 15:24:28,344 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 15:24:28,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:24:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 15:24:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 255. [2020-08-18 15:24:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-18 15:24:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2020-08-18 15:24:28,395 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 82 [2020-08-18 15:24:28,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:28,395 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2020-08-18 15:24:28,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:24:28,396 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2020-08-18 15:24:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 15:24:28,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:28,397 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:24:28,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:24:28,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:28,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1154984362, now seen corresponding path program 1 times [2020-08-18 15:24:28,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:28,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973909793] [2020-08-18 15:24:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,698 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:24:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 15:24:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 15:24:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:24:28,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973909793] [2020-08-18 15:24:28,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:28,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:24:28,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066726716] [2020-08-18 15:24:28,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:24:28,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:28,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:24:28,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:24:28,906 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand 9 states. [2020-08-18 15:24:29,383 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:30,050 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:30,947 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:31,256 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:31,651 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:31,879 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:32,571 INFO L93 Difference]: Finished difference Result 524 states and 626 transitions. [2020-08-18 15:24:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:24:32,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-18 15:24:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:32,580 INFO L225 Difference]: With dead ends: 524 [2020-08-18 15:24:32,580 INFO L226 Difference]: Without dead ends: 297 [2020-08-18 15:24:32,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:24:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-18 15:24:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 254. [2020-08-18 15:24:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-18 15:24:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2020-08-18 15:24:32,633 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 96 [2020-08-18 15:24:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:32,633 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2020-08-18 15:24:32,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:24:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2020-08-18 15:24:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 15:24:32,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:32,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:24:32,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:24:32,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:32,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1590195415, now seen corresponding path program 1 times [2020-08-18 15:24:32,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:32,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349306905] [2020-08-18 15:24:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,903 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:24:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 15:24:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 15:24:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:33,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349306905] [2020-08-18 15:24:33,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:33,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:24:33,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424706418] [2020-08-18 15:24:33,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:24:33,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:33,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:24:33,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:24:33,093 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand 9 states. [2020-08-18 15:24:34,019 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:34,277 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:24:34,548 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:34,791 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:35,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:35,770 INFO L93 Difference]: Finished difference Result 524 states and 631 transitions. [2020-08-18 15:24:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:24:35,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-08-18 15:24:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:35,783 INFO L225 Difference]: With dead ends: 524 [2020-08-18 15:24:35,783 INFO L226 Difference]: Without dead ends: 298 [2020-08-18 15:24:35,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:24:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-08-18 15:24:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 259. [2020-08-18 15:24:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-08-18 15:24:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-08-18 15:24:35,842 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 112 [2020-08-18 15:24:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:35,842 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-08-18 15:24:35,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:24:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-08-18 15:24:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 15:24:35,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:35,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:24:35,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:24:35,845 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash -765609835, now seen corresponding path program 1 times [2020-08-18 15:24:35,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:35,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296435689] [2020-08-18 15:24:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,140 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:24:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 15:24:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 15:24:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:36,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296435689] [2020-08-18 15:24:36,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:36,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 15:24:36,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165081866] [2020-08-18 15:24:36,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:24:36,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:36,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:24:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:24:36,355 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-08-18 15:24:36,913 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:37,144 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:37,367 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:38,057 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:38,298 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:38,527 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:39,598 INFO L93 Difference]: Finished difference Result 534 states and 642 transitions. [2020-08-18 15:24:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:24:39,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-08-18 15:24:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:39,601 INFO L225 Difference]: With dead ends: 534 [2020-08-18 15:24:39,601 INFO L226 Difference]: Without dead ends: 303 [2020-08-18 15:24:39,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:24:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-18 15:24:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 263. [2020-08-18 15:24:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-18 15:24:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2020-08-18 15:24:39,648 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 112 [2020-08-18 15:24:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:39,649 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2020-08-18 15:24:39,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:24:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2020-08-18 15:24:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 15:24:39,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:39,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:24:39,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:24:39,651 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash 3560180, now seen corresponding path program 1 times [2020-08-18 15:24:39,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:39,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247984769] [2020-08-18 15:24:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:39,985 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:24:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:24:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 15:24:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 15:24:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:40,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247984769] [2020-08-18 15:24:40,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:40,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:24:40,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994810353] [2020-08-18 15:24:40,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:24:40,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:24:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:24:40,226 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand 7 states. [2020-08-18 15:24:40,741 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:41,248 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:43,078 INFO L93 Difference]: Finished difference Result 713 states and 879 transitions. [2020-08-18 15:24:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:24:43,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-08-18 15:24:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:43,083 INFO L225 Difference]: With dead ends: 713 [2020-08-18 15:24:43,083 INFO L226 Difference]: Without dead ends: 478 [2020-08-18 15:24:43,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:24:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-18 15:24:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 440. [2020-08-18 15:24:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-18 15:24:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 512 transitions. [2020-08-18 15:24:43,158 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 512 transitions. Word has length 112 [2020-08-18 15:24:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:43,158 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 512 transitions. [2020-08-18 15:24:43,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:24:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 512 transitions. [2020-08-18 15:24:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-18 15:24:43,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:43,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:24:43,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:24:43,161 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:43,162 INFO L82 PathProgramCache]: Analyzing trace with hash -427651474, now seen corresponding path program 1 times [2020-08-18 15:24:43,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:43,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35319109] [2020-08-18 15:24:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,517 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:24:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 15:24:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 15:24:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 15:24:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 15:24:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:24:43,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35319109] [2020-08-18 15:24:43,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:24:43,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:24:43,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171999125] [2020-08-18 15:24:43,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:24:43,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:24:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:24:43,739 INFO L87 Difference]: Start difference. First operand 440 states and 512 transitions. Second operand 12 states. [2020-08-18 15:24:44,375 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:45,096 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:46,106 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:46,410 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:46,653 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:24:46,925 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:47,215 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:48,707 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:48,994 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:50,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:50,034 INFO L93 Difference]: Finished difference Result 1217 states and 1501 transitions. [2020-08-18 15:24:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 15:24:50,038 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-08-18 15:24:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:50,044 INFO L225 Difference]: With dead ends: 1217 [2020-08-18 15:24:50,045 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 15:24:50,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 15:24:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 15:24:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 767. [2020-08-18 15:24:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-08-18 15:24:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 883 transitions. [2020-08-18 15:24:50,197 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 883 transitions. Word has length 116 [2020-08-18 15:24:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:50,198 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 883 transitions. [2020-08-18 15:24:50,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:24:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 883 transitions. [2020-08-18 15:24:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-18 15:24:50,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:50,208 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1] [2020-08-18 15:24:50,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:24:50,209 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:50,209 INFO L82 PathProgramCache]: Analyzing trace with hash -701597495, now seen corresponding path program 1 times [2020-08-18 15:24:50,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:50,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064475559] [2020-08-18 15:24:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,660 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:24:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:24:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 15:24:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 15:24:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:24:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:24:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 15:24:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:24:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:24:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 15:24:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 15:24:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-18 15:24:51,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064475559] [2020-08-18 15:24:51,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:24:51,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 15:24:51,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078115891] [2020-08-18 15:24:51,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 15:24:51,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:51,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 15:24:51,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 15:24:51,040 INFO L87 Difference]: Start difference. First operand 767 states and 883 transitions. Second operand 16 states. [2020-08-18 15:24:51,559 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:24:51,891 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 15:24:52,149 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 15:24:52,404 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 15:24:52,994 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:53,249 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:54,114 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:24:54,665 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:24:55,066 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:24:55,468 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:55,751 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:24:56,069 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:24:56,585 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:24:56,994 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:24:57,574 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:24:57,871 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:24:58,313 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:24:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:24:58,795 INFO L93 Difference]: Finished difference Result 1642 states and 1948 transitions. [2020-08-18 15:24:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 15:24:58,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-08-18 15:24:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:24:58,807 INFO L225 Difference]: With dead ends: 1642 [2020-08-18 15:24:58,807 INFO L226 Difference]: Without dead ends: 974 [2020-08-18 15:24:58,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 15:24:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-08-18 15:24:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 895. [2020-08-18 15:24:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-08-18 15:24:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1041 transitions. [2020-08-18 15:24:58,980 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1041 transitions. Word has length 193 [2020-08-18 15:24:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:24:58,981 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1041 transitions. [2020-08-18 15:24:58,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 15:24:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1041 transitions. [2020-08-18 15:24:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 15:24:58,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:24:58,990 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 15:24:58,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:24:58,990 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:24:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:24:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash 833806897, now seen corresponding path program 1 times [2020-08-18 15:24:58,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:24:58,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205238000] [2020-08-18 15:24:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:24:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,373 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:24:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:24:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:24:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:24:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:24:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:24:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 15:24:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 15:24:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 15:24:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:24:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:24:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:24:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 15:24:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 15:24:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:24:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:24:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:24:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:24:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 15:24:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 15:24:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:24:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 15:24:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:24:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:24:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:24:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:24:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 15:24:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 15:24:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:24:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-08-18 15:24:59,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205238000] [2020-08-18 15:24:59,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:24:59,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 15:24:59,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353412071] [2020-08-18 15:24:59,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 15:24:59,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:24:59,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 15:24:59,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:24:59,881 INFO L87 Difference]: Start difference. First operand 895 states and 1041 transitions. Second operand 14 states. [2020-08-18 15:25:00,517 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:25:01,305 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:25:02,513 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:02,846 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:03,155 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:03,447 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:25:03,795 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:25:04,104 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:25:05,695 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:06,226 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 15:25:06,527 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 15:25:06,786 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 15:25:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:08,223 INFO L93 Difference]: Finished difference Result 2647 states and 3144 transitions. [2020-08-18 15:25:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 15:25:08,224 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 331 [2020-08-18 15:25:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:08,235 INFO L225 Difference]: With dead ends: 2647 [2020-08-18 15:25:08,236 INFO L226 Difference]: Without dead ends: 1788 [2020-08-18 15:25:08,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 15:25:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-18 15:25:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1747. [2020-08-18 15:25:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-08-18 15:25:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2006 transitions. [2020-08-18 15:25:08,616 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2006 transitions. Word has length 331 [2020-08-18 15:25:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:08,619 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2006 transitions. [2020-08-18 15:25:08,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 15:25:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2006 transitions. [2020-08-18 15:25:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-18 15:25:08,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:08,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 15:25:08,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:25:08,635 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash -944820455, now seen corresponding path program 1 times [2020-08-18 15:25:08,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:08,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606429499] [2020-08-18 15:25:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,929 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:25:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:25:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:25:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:25:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:25:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:25:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:25:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:25:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 15:25:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:25:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:25:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 15:25:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 15:25:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:25:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:25:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:25:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:25:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 15:25:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-18 15:25:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:25:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:25:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:25:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:25:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-18 15:25:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 15:25:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:25:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:25:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:25:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:25:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-18 15:25:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-18 15:25:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 54 proven. 40 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-08-18 15:25:09,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606429499] [2020-08-18 15:25:09,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:25:09,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 15:25:09,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137528919] [2020-08-18 15:25:09,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 15:25:09,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:09,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 15:25:09,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:25:09,544 INFO L87 Difference]: Start difference. First operand 1747 states and 2006 transitions. Second operand 19 states. [2020-08-18 15:25:10,121 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:25:10,464 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:10,737 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:10,998 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:11,688 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:25:12,944 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:13,289 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:13,587 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 15:25:13,886 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192