/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:20:23,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:20:23,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:20:23,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:20:23,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:20:23,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:20:23,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:20:23,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:20:23,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:20:23,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:20:23,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:20:23,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:20:23,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:20:23,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:20:23,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:20:23,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:20:23,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:20:23,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:20:23,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:20:23,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:20:23,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:20:23,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:20:23,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:20:23,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:20:23,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:20:23,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:20:23,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:20:23,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:20:23,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:20:23,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:20:23,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:20:23,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:20:23,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:20:23,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:20:23,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:20:23,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:20:23,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:20:23,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:20:23,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:20:23,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:20:23,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:20:23,372 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 [2020-08-21 16:20:23,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:20:23,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:20:23,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:20:23,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:20:23,414 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:20:23,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:20:23,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:20:23,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:20:23,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:20:23,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:20:23,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:20:23,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:20:23,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:20:23,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:20:23,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:20:23,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:20:23,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:20:23,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:20:23,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:20:23,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:20:23,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:20:23,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:20:23,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:20:23,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:20:23,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:20:23,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:20:23,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:20:23,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:20:23,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:20:23,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:20:23,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:20:23,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:20:23,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:20:23,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:20:23,733 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:20:23,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-21 16:20:23,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/213673b0d/db0a0e5c9f4340b4a0efeef9df909e91/FLAGe3b7468ac [2020-08-21 16:20:24,363 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:20:24,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product45.cil.c [2020-08-21 16:20:24,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/213673b0d/db0a0e5c9f4340b4a0efeef9df909e91/FLAGe3b7468ac [2020-08-21 16:20:24,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/213673b0d/db0a0e5c9f4340b4a0efeef9df909e91 [2020-08-21 16:20:24,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:20:24,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:20:24,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:20:24,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:20:24,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:20:24,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:20:24" (1/1) ... [2020-08-21 16:20:24,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:24, skipping insertion in model container [2020-08-21 16:20:24,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:20:24" (1/1) ... [2020-08-21 16:20:24,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:20:24,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:20:25,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:20:25,256 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:20:25,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:20:25,398 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:20:25,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25 WrapperNode [2020-08-21 16:20:25,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:20:25,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:20:25,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:20:25,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:20:25,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (1/1) ... [2020-08-21 16:20:25,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:20:25,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:20:25,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:20:25,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:20:25,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (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 [2020-08-21 16:20:25,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:20:25,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:20:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:20:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:20:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:20:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:20:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:20:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:20:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:20:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:20:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:20:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:20:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:20:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:20:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:20:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 16:20:25,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:20:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:20:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:20:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:20:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:20:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:20:25,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:20:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:20:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:20:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:20:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:20:26,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:20:26,759 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:20:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:20:26 BoogieIcfgContainer [2020-08-21 16:20:26,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:20:26,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:20:26,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:20:26,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:20:26,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:20:24" (1/3) ... [2020-08-21 16:20:26,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdfd8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:20:26, skipping insertion in model container [2020-08-21 16:20:26,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:20:25" (2/3) ... [2020-08-21 16:20:26,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdfd8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:20:26, skipping insertion in model container [2020-08-21 16:20:26,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:20:26" (3/3) ... [2020-08-21 16:20:26,781 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2020-08-21 16:20:26,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:20:26,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:20:26,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:20:26,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:20:26,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:20:26,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:20:26,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:20:26,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:20:26,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:20:26,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:20:26,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:20:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-21 16:20:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:20:26,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:26,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:26,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:26,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:26,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1016037874, now seen corresponding path program 1 times [2020-08-21 16:20:26,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:26,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621761331] [2020-08-21 16:20:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,502 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:20:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 16:20:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:27,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621761331] [2020-08-21 16:20:27,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:27,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:20:27,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828804687] [2020-08-21 16:20:27,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:20:27,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:27,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:20:27,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:20:27,641 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-08-21 16:20:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:28,766 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2020-08-21 16:20:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:20:28,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 16:20:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:28,783 INFO L225 Difference]: With dead ends: 302 [2020-08-21 16:20:28,783 INFO L226 Difference]: Without dead ends: 168 [2020-08-21 16:20:28,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:20:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-21 16:20:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2020-08-21 16:20:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 16:20:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-21 16:20:28,887 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 51 [2020-08-21 16:20:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:28,888 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-21 16:20:28,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:20:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-21 16:20:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 16:20:28,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:28,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:28,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:20:28,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:28,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2062541652, now seen corresponding path program 1 times [2020-08-21 16:20:28,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:28,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731513004] [2020-08-21 16:20:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,286 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:20:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:29,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731513004] [2020-08-21 16:20:29,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:29,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:20:29,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838628993] [2020-08-21 16:20:29,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:20:29,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:20:29,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:20:29,342 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 5 states. [2020-08-21 16:20:29,779 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:30,794 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2020-08-21 16:20:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:20:30,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 16:20:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:30,799 INFO L225 Difference]: With dead ends: 247 [2020-08-21 16:20:30,799 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 16:20:30,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:20:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 16:20:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-21 16:20:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 16:20:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-21 16:20:30,841 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 52 [2020-08-21 16:20:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:30,842 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-21 16:20:30,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:20:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-21 16:20:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 16:20:30,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:30,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:30,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:20:30,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1086390402, now seen corresponding path program 1 times [2020-08-21 16:20:30,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:30,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693179042] [2020-08-21 16:20:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,186 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:20:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:20:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:31,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693179042] [2020-08-21 16:20:31,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:31,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:20:31,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159717672] [2020-08-21 16:20:31,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:20:31,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:20:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:20:31,305 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 9 states. [2020-08-21 16:20:31,760 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:32,090 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:32,345 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:32,600 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:33,884 INFO L93 Difference]: Finished difference Result 256 states and 321 transitions. [2020-08-21 16:20:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:20:33,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 16:20:33,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:33,888 INFO L225 Difference]: With dead ends: 256 [2020-08-21 16:20:33,889 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 16:20:33,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:20:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 16:20:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-21 16:20:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 16:20:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 16:20:33,924 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 56 [2020-08-21 16:20:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:33,925 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 16:20:33,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:20:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 16:20:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 16:20:33,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:33,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:33,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:20:33,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash -848651131, now seen corresponding path program 1 times [2020-08-21 16:20:33,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:33,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39496513] [2020-08-21 16:20:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,184 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:20:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 16:20:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 16:20:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:34,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39496513] [2020-08-21 16:20:34,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:34,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:20:34,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153758882] [2020-08-21 16:20:34,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:20:34,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:34,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:20:34,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:20:34,305 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2020-08-21 16:20:34,634 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:35,792 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:36,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:36,439 INFO L93 Difference]: Finished difference Result 355 states and 448 transitions. [2020-08-21 16:20:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:20:36,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-21 16:20:36,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:36,443 INFO L225 Difference]: With dead ends: 355 [2020-08-21 16:20:36,444 INFO L226 Difference]: Without dead ends: 257 [2020-08-21 16:20:36,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:20:36,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-21 16:20:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 211. [2020-08-21 16:20:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-21 16:20:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-08-21 16:20:36,502 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 69 [2020-08-21 16:20:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:36,503 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-08-21 16:20:36,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:20:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-08-21 16:20:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 16:20:36,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:36,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:36,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:20:36,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1442987939, now seen corresponding path program 1 times [2020-08-21 16:20:36,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:36,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094421805] [2020-08-21 16:20:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,809 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:20:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 16:20:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 16:20:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:36,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094421805] [2020-08-21 16:20:36,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:36,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:20:36,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838716867] [2020-08-21 16:20:36,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:20:36,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:36,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:20:36,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:20:36,961 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 9 states. [2020-08-21 16:20:37,391 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:38,385 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:38,704 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:39,321 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:39,551 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:40,620 INFO L93 Difference]: Finished difference Result 624 states and 785 transitions. [2020-08-21 16:20:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 16:20:40,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 16:20:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:40,646 INFO L225 Difference]: With dead ends: 624 [2020-08-21 16:20:40,646 INFO L226 Difference]: Without dead ends: 441 [2020-08-21 16:20:40,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 16:20:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-08-21 16:20:40,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2020-08-21 16:20:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-08-21 16:20:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 426 transitions. [2020-08-21 16:20:40,742 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 426 transitions. Word has length 83 [2020-08-21 16:20:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:40,743 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 426 transitions. [2020-08-21 16:20:40,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:20:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 426 transitions. [2020-08-21 16:20:40,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 16:20:40,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:40,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:20:40,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:20:40,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -142547263, now seen corresponding path program 1 times [2020-08-21 16:20:40,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:40,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488640387] [2020-08-21 16:20:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,033 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 16:20:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 16:20:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:20:41,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488640387] [2020-08-21 16:20:41,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:41,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:20:41,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11641961] [2020-08-21 16:20:41,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:20:41,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:20:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:20:41,182 INFO L87 Difference]: Start difference. First operand 370 states and 426 transitions. Second operand 10 states. [2020-08-21 16:20:41,624 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:42,879 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:43,933 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:44,209 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:44,489 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:44,870 INFO L93 Difference]: Finished difference Result 818 states and 1011 transitions. [2020-08-21 16:20:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 16:20:44,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-21 16:20:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:44,875 INFO L225 Difference]: With dead ends: 818 [2020-08-21 16:20:44,875 INFO L226 Difference]: Without dead ends: 476 [2020-08-21 16:20:44,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 16:20:44,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-21 16:20:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2020-08-21 16:20:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-21 16:20:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 423 transitions. [2020-08-21 16:20:44,954 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 423 transitions. Word has length 87 [2020-08-21 16:20:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:44,955 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 423 transitions. [2020-08-21 16:20:44,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:20:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 423 transitions. [2020-08-21 16:20:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 16:20:44,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:44,958 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] [2020-08-21 16:20:44,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:20:44,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1138633269, now seen corresponding path program 1 times [2020-08-21 16:20:44,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:44,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866905424] [2020-08-21 16:20:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,199 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:20:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:20:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:20:45,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866905424] [2020-08-21 16:20:45,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:45,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:20:45,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344543116] [2020-08-21 16:20:45,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:20:45,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:45,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:20:45,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:20:45,368 INFO L87 Difference]: Start difference. First operand 369 states and 423 transitions. Second operand 10 states. [2020-08-21 16:20:46,468 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:20:46,711 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:20:46,959 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:47,204 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:48,360 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2020-08-21 16:20:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:20:48,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-08-21 16:20:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:48,365 INFO L225 Difference]: With dead ends: 825 [2020-08-21 16:20:48,365 INFO L226 Difference]: Without dead ends: 484 [2020-08-21 16:20:48,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:20:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-08-21 16:20:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 379. [2020-08-21 16:20:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 16:20:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2020-08-21 16:20:48,441 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 103 [2020-08-21 16:20:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:48,442 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2020-08-21 16:20:48,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:20:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2020-08-21 16:20:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 16:20:48,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:48,444 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] [2020-08-21 16:20:48,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:20:48,445 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:48,445 INFO L82 PathProgramCache]: Analyzing trace with hash 789639433, now seen corresponding path program 1 times [2020-08-21 16:20:48,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:48,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298060470] [2020-08-21 16:20:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,712 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:20:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:20:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:20:48,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298060470] [2020-08-21 16:20:48,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:48,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:20:48,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822359167] [2020-08-21 16:20:48,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:20:48,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:20:48,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:20:48,915 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 12 states. [2020-08-21 16:20:49,413 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:49,692 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:49,923 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:50,562 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:50,816 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:51,064 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:20:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:52,238 INFO L93 Difference]: Finished difference Result 845 states and 1062 transitions. [2020-08-21 16:20:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:20:52,239 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2020-08-21 16:20:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:52,242 INFO L225 Difference]: With dead ends: 845 [2020-08-21 16:20:52,243 INFO L226 Difference]: Without dead ends: 494 [2020-08-21 16:20:52,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:20:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-08-21 16:20:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 387. [2020-08-21 16:20:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 16:20:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 441 transitions. [2020-08-21 16:20:52,309 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 441 transitions. Word has length 103 [2020-08-21 16:20:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:52,310 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 441 transitions. [2020-08-21 16:20:52,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:20:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 441 transitions. [2020-08-21 16:20:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 16:20:52,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:52,312 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] [2020-08-21 16:20:52,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:20:52,313 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:52,313 INFO L82 PathProgramCache]: Analyzing trace with hash 549099304, now seen corresponding path program 1 times [2020-08-21 16:20:52,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:52,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414047460] [2020-08-21 16:20:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,672 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:52,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:20:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:20:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:20:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:20:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:20:52,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414047460] [2020-08-21 16:20:52,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:20:52,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:20:52,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94901830] [2020-08-21 16:20:52,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:20:52,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:52,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:20:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:20:52,871 INFO L87 Difference]: Start difference. First operand 387 states and 441 transitions. Second operand 8 states. [2020-08-21 16:20:53,481 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:54,072 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:20:56,334 INFO L93 Difference]: Finished difference Result 1164 states and 1513 transitions. [2020-08-21 16:20:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:20:56,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-08-21 16:20:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:20:56,341 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 16:20:56,341 INFO L226 Difference]: Without dead ends: 805 [2020-08-21 16:20:56,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-21 16:20:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-08-21 16:20:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 673. [2020-08-21 16:20:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-08-21 16:20:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 795 transitions. [2020-08-21 16:20:56,477 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 795 transitions. Word has length 103 [2020-08-21 16:20:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:20:56,478 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 795 transitions. [2020-08-21 16:20:56,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:20:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 795 transitions. [2020-08-21 16:20:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 16:20:56,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:20:56,481 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] [2020-08-21 16:20:56,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:20:56,481 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:20:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:20:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 290063790, now seen corresponding path program 1 times [2020-08-21 16:20:56,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:20:56,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276240400] [2020-08-21 16:20:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:20:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,736 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:20:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:20:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:20:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:20:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:20:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:20:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:20:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:20:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:20:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:20:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:20:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:20:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:20:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:20:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:20:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:20:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:20:57,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276240400] [2020-08-21 16:20:57,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:20:57,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 16:20:57,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900428886] [2020-08-21 16:20:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 16:20:57,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:20:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 16:20:57,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:20:57,082 INFO L87 Difference]: Start difference. First operand 673 states and 795 transitions. Second operand 18 states. [2020-08-21 16:20:58,142 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:20:58,520 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:20:58,793 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:20:59,087 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:20:59,799 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:00,728 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:01,037 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:01,316 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:01,580 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:01,883 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:02,149 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:02,709 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 16:21:03,281 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 16:21:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:05,113 INFO L93 Difference]: Finished difference Result 1422 states and 1767 transitions. [2020-08-21 16:21:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-21 16:21:05,113 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-08-21 16:21:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:05,120 INFO L225 Difference]: With dead ends: 1422 [2020-08-21 16:21:05,120 INFO L226 Difference]: Without dead ends: 777 [2020-08-21 16:21:05,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 16:21:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-21 16:21:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 654. [2020-08-21 16:21:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-08-21 16:21:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 763 transitions. [2020-08-21 16:21:05,267 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 763 transitions. Word has length 107 [2020-08-21 16:21:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:05,267 INFO L479 AbstractCegarLoop]: Abstraction has 654 states and 763 transitions. [2020-08-21 16:21:05,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 16:21:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 763 transitions. [2020-08-21 16:21:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-21 16:21:05,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:05,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-08-21 16:21:05,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:21:05,274 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1933824326, now seen corresponding path program 1 times [2020-08-21 16:21:05,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:05,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408111662] [2020-08-21 16:21:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,645 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:21:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:21:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:21:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:21:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:21:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:21:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:21:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 16:21:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 16:21:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:21:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:21:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:21:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 16:21:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-21 16:21:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-21 16:21:05,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408111662] [2020-08-21 16:21:05,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:21:05,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 16:21:05,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864223406] [2020-08-21 16:21:05,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 16:21:05,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:05,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 16:21:05,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:21:05,949 INFO L87 Difference]: Start difference. First operand 654 states and 763 transitions. Second operand 19 states. [2020-08-21 16:21:06,466 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:06,794 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:21:07,060 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:21:07,306 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:21:07,996 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:21:08,948 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:09,266 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:09,545 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:09,808 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:10,113 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:10,382 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:11,646 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:11,917 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:12,202 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:12,454 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:21:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:13,385 INFO L93 Difference]: Finished difference Result 1213 states and 1509 transitions. [2020-08-21 16:21:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-21 16:21:13,387 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 158 [2020-08-21 16:21:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:13,388 INFO L225 Difference]: With dead ends: 1213 [2020-08-21 16:21:13,389 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:21:13,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 16:21:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:21:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:21:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:21:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:21:13,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2020-08-21 16:21:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:13,395 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:21:13,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 16:21:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:21:13,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:21:13,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:21:13,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:21:14,141 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-21 16:21:14,313 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-21 16:21:14,557 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 32 [2020-08-21 16:21:14,964 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2020-08-21 16:21:16,433 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-21 16:21:17,963 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-21 16:21:18,107 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 202 [2020-08-21 16:21:19,190 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-21 16:21:19,775 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-21 16:21:20,790 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 261 [2020-08-21 16:21:21,105 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18 [2020-08-21 16:21:21,593 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 16 [2020-08-21 16:21:21,761 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-21 16:21:21,936 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25 [2020-08-21 16:21:22,104 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 25