/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:28:55,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:28:55,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:28:55,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:28:55,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:28:55,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:28:55,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:28:55,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:28:55,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:28:55,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:28:55,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:28:55,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:28:55,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:28:55,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:28:55,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:28:55,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:28:55,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:28:55,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:28:55,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:28:55,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:28:55,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:28:55,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:28:55,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:28:55,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:28:55,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:28:55,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:28:55,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:28:55,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:28:55,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:28:55,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:28:55,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:28:55,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:28:55,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:28:55,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:28:55,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:28:55,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:28:55,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:28:55,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:28:55,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:28:55,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:28:55,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:28:55,070 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 [2020-08-22 00:28:55,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:28:55,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:28:55,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:28:55,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:28:55,121 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:28:55,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:28:55,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:28:55,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:28:55,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:28:55,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:28:55,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:28:55,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:28:55,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:28:55,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:28:55,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:28:55,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:28:55,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:28:55,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:28:55,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:28:55,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:28:55,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:28:55,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:55,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:28:55,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:28:55,129 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:28:55,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:28:55,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:28:55,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:28:55,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:28:55,436 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:28:55,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-22 00:28:55,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f0a655b/5e4637a3f24747a8b60c145a968e3050/FLAG3feaa135b [2020-08-22 00:28:56,035 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:28:56,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-22 00:28:56,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f0a655b/5e4637a3f24747a8b60c145a968e3050/FLAG3feaa135b [2020-08-22 00:28:56,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5f0a655b/5e4637a3f24747a8b60c145a968e3050 [2020-08-22 00:28:56,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:28:56,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:28:56,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:56,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:28:56,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:28:56,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:56" (1/1) ... [2020-08-22 00:28:56,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592b8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:56, skipping insertion in model container [2020-08-22 00:28:56,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:56" (1/1) ... [2020-08-22 00:28:56,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:28:56,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:28:56,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:56,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:28:57,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:57,090 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:28:57,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57 WrapperNode [2020-08-22 00:28:57,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:57,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:28:57,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:28:57,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:28:57,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (1/1) ... [2020-08-22 00:28:57,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:28:57,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:28:57,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:28:57,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:28:57,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (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 [2020-08-22 00:28:57,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:28:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:28:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:28:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:28:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:28:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:28:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:28:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:28:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:28:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 00:28:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:28:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:28:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:28:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:28:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 00:28:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:28:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:28:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:28:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:28:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:28:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:28:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:28:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:28:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:28:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:28:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:28:57,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:28:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:28:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:28:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:28:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:28:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:28:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:28:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:28:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:28:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:28:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 00:28:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:28:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:28:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:28:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:28:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:28:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:28:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:28:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:28:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:28:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:28:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:28:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:28:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:28:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:28:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:28:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:28:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:28:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:28:58,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:28:58,335 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:28:58,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:58 BoogieIcfgContainer [2020-08-22 00:28:58,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:28:58,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:28:58,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:28:58,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:28:58,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:28:56" (1/3) ... [2020-08-22 00:28:58,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca1c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:58, skipping insertion in model container [2020-08-22 00:28:58,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:57" (2/3) ... [2020-08-22 00:28:58,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca1c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:58, skipping insertion in model container [2020-08-22 00:28:58,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:58" (3/3) ... [2020-08-22 00:28:58,355 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-08-22 00:28:58,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:28:58,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:28:58,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:28:58,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:28:58,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:28:58,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:28:58,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:28:58,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:28:58,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:28:58,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:28:58,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:28:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 00:28:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:28:58,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:58,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:58,454 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:58,460 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2020-08-22 00:28:58,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:58,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406610383] [2020-08-22 00:28:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,213 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:28:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:28:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406610383] [2020-08-22 00:28:59,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:59,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:28:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468052915] [2020-08-22 00:28:59,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:28:59,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:28:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:59,338 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-08-22 00:29:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:00,535 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-22 00:29:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:29:00,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:29:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:00,554 INFO L225 Difference]: With dead ends: 320 [2020-08-22 00:29:00,554 INFO L226 Difference]: Without dead ends: 173 [2020-08-22 00:29:00,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:29:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-22 00:29:00,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-22 00:29:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 00:29:00,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-22 00:29:00,662 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-22 00:29:00,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:00,663 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-22 00:29:00,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:29:00,663 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-22 00:29:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:29:00,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:00,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:00,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:29:00,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:00,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2020-08-22 00:29:00,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:00,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635020423] [2020-08-22 00:29:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,003 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:29:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:01,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635020423] [2020-08-22 00:29:01,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:01,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:29:01,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532379717] [2020-08-22 00:29:01,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:29:01,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:01,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:29:01,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:29:01,049 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-22 00:29:01,486 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:02,393 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-22 00:29:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:29:02,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:29:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:02,397 INFO L225 Difference]: With dead ends: 243 [2020-08-22 00:29:02,397 INFO L226 Difference]: Without dead ends: 157 [2020-08-22 00:29:02,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:29:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-22 00:29:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-22 00:29:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 00:29:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-22 00:29:02,440 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-22 00:29:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:02,441 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-22 00:29:02,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:29:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-22 00:29:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:29:02,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:02,443 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] [2020-08-22 00:29:02,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:29:02,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2020-08-22 00:29:02,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:02,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342822931] [2020-08-22 00:29:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,783 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:29:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:29:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:02,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342822931] [2020-08-22 00:29:02,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:02,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:29:02,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100947727] [2020-08-22 00:29:02,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:29:02,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:02,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:29:02,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:29:02,864 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2020-08-22 00:29:03,144 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:03,800 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:05,333 INFO L93 Difference]: Finished difference Result 440 states and 546 transitions. [2020-08-22 00:29:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:29:05,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 00:29:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:05,339 INFO L225 Difference]: With dead ends: 440 [2020-08-22 00:29:05,339 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 00:29:05,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:29:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 00:29:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-08-22 00:29:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 00:29:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-22 00:29:05,417 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-22 00:29:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:05,418 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-22 00:29:05,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:29:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-22 00:29:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:29:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:05,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:05,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:29:05,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2020-08-22 00:29:05,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:05,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021018639] [2020-08-22 00:29:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,775 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:29:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:29:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:05,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021018639] [2020-08-22 00:29:05,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:05,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:29:05,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403979146] [2020-08-22 00:29:05,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:05,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:05,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:05,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:05,872 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2020-08-22 00:29:06,255 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:06,564 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:06,810 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:07,072 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:07,604 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:08,482 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:08,888 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:09,182 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:09,440 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:09,750 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:10,096 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:10,416 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:10,780 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:12,406 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2020-08-22 00:29:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:29:12,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 00:29:12,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:12,416 INFO L225 Difference]: With dead ends: 1101 [2020-08-22 00:29:12,417 INFO L226 Difference]: Without dead ends: 853 [2020-08-22 00:29:12,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:29:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-22 00:29:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2020-08-22 00:29:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-08-22 00:29:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2020-08-22 00:29:12,628 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2020-08-22 00:29:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:12,628 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2020-08-22 00:29:12,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2020-08-22 00:29:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:29:12,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:12,634 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] [2020-08-22 00:29:12,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:29:12,635 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2020-08-22 00:29:12,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:12,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042661428] [2020-08-22 00:29:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,933 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:29:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:29:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:29:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:29:13,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042661428] [2020-08-22 00:29:13,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:29:13,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:29:13,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4797516] [2020-08-22 00:29:13,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:29:13,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:29:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:29:13,006 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2020-08-22 00:29:13,351 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:15,198 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2020-08-22 00:29:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:29:15,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 00:29:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:15,208 INFO L225 Difference]: With dead ends: 1819 [2020-08-22 00:29:15,211 INFO L226 Difference]: Without dead ends: 1087 [2020-08-22 00:29:15,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:29:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-08-22 00:29:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2020-08-22 00:29:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-08-22 00:29:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2020-08-22 00:29:15,450 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2020-08-22 00:29:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:15,450 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2020-08-22 00:29:15,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:29:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2020-08-22 00:29:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 00:29:15,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:15,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:15,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:29:15,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2020-08-22 00:29:15,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:15,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964674387] [2020-08-22 00:29:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,804 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:29:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:29:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 00:29:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 00:29:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:29:15,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964674387] [2020-08-22 00:29:15,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:15,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:15,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985451339] [2020-08-22 00:29:15,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:15,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:15,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:15,981 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 10 states. [2020-08-22 00:29:16,576 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 00:29:17,137 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:18,967 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:20,807 INFO L93 Difference]: Finished difference Result 1937 states and 2549 transitions. [2020-08-22 00:29:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:29:20,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 00:29:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:20,820 INFO L225 Difference]: With dead ends: 1937 [2020-08-22 00:29:20,821 INFO L226 Difference]: Without dead ends: 1216 [2020-08-22 00:29:20,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:29:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-08-22 00:29:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1103. [2020-08-22 00:29:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 00:29:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1367 transitions. [2020-08-22 00:29:21,029 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1367 transitions. Word has length 89 [2020-08-22 00:29:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:21,030 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1367 transitions. [2020-08-22 00:29:21,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1367 transitions. [2020-08-22 00:29:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:29:21,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:21,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:21,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:29:21,035 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1811638207, now seen corresponding path program 1 times [2020-08-22 00:29:21,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:21,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885251630] [2020-08-22 00:29:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,277 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 00:29:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 00:29:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:29:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:29:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:29:21,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885251630] [2020-08-22 00:29:21,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:21,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:29:21,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302189946] [2020-08-22 00:29:21,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:29:21,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:21,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:29:21,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:29:21,490 INFO L87 Difference]: Start difference. First operand 1103 states and 1367 transitions. Second operand 9 states. [2020-08-22 00:29:22,458 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:22,684 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:22,936 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:23,869 INFO L93 Difference]: Finished difference Result 2034 states and 2650 transitions. [2020-08-22 00:29:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:29:23,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-08-22 00:29:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:23,879 INFO L225 Difference]: With dead ends: 2034 [2020-08-22 00:29:23,879 INFO L226 Difference]: Without dead ends: 1229 [2020-08-22 00:29:23,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-08-22 00:29:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1103. [2020-08-22 00:29:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 00:29:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1365 transitions. [2020-08-22 00:29:24,111 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1365 transitions. Word has length 134 [2020-08-22 00:29:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:24,112 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1365 transitions. [2020-08-22 00:29:24,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:29:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1365 transitions. [2020-08-22 00:29:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 00:29:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:24,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:24,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:29:24,119 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash 622271142, now seen corresponding path program 1 times [2020-08-22 00:29:24,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:24,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253636553] [2020-08-22 00:29:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,393 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 00:29:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 00:29:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 00:29:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 00:29:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 00:29:24,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253636553] [2020-08-22 00:29:24,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:24,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:24,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888765457] [2020-08-22 00:29:24,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:24,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:24,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:24,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:24,588 INFO L87 Difference]: Start difference. First operand 1103 states and 1365 transitions. Second operand 10 states. [2020-08-22 00:29:25,625 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:25,909 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:26,159 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:26,386 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:27,425 INFO L93 Difference]: Finished difference Result 2316 states and 2962 transitions. [2020-08-22 00:29:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:29:27,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 00:29:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:27,434 INFO L225 Difference]: With dead ends: 2316 [2020-08-22 00:29:27,434 INFO L226 Difference]: Without dead ends: 1237 [2020-08-22 00:29:27,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:29:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-08-22 00:29:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1123. [2020-08-22 00:29:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-22 00:29:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1387 transitions. [2020-08-22 00:29:27,675 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1387 transitions. Word has length 130 [2020-08-22 00:29:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:27,676 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1387 transitions. [2020-08-22 00:29:27,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1387 transitions. [2020-08-22 00:29:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:29:27,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:27,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:27,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:29:27,682 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 669135741, now seen corresponding path program 1 times [2020-08-22 00:29:27,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:27,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921148815] [2020-08-22 00:29:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:27,981 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:27,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 00:29:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 00:29:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:29:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:29:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:29:28,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921148815] [2020-08-22 00:29:28,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:28,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:28,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991832168] [2020-08-22 00:29:28,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:28,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:28,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:28,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:28,228 INFO L87 Difference]: Start difference. First operand 1123 states and 1387 transitions. Second operand 10 states. [2020-08-22 00:29:30,323 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:30,589 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:29:30,819 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:31,058 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:31,558 INFO L93 Difference]: Finished difference Result 2082 states and 2656 transitions. [2020-08-22 00:29:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:29:31,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-22 00:29:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:31,567 INFO L225 Difference]: With dead ends: 2082 [2020-08-22 00:29:31,567 INFO L226 Difference]: Without dead ends: 1273 [2020-08-22 00:29:31,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:29:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-08-22 00:29:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1159. [2020-08-22 00:29:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-22 00:29:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1435 transitions. [2020-08-22 00:29:31,791 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1435 transitions. Word has length 134 [2020-08-22 00:29:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:31,792 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1435 transitions. [2020-08-22 00:29:31,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1435 transitions. [2020-08-22 00:29:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:29:31,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:31,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:31,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:29:31,797 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 159662651, now seen corresponding path program 1 times [2020-08-22 00:29:31,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:31,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136217419] [2020-08-22 00:29:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,080 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 00:29:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 00:29:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:29:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:29:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:29:32,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136217419] [2020-08-22 00:29:32,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:32,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:32,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399639468] [2020-08-22 00:29:32,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:32,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:32,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:32,246 INFO L87 Difference]: Start difference. First operand 1159 states and 1435 transitions. Second operand 10 states. [2020-08-22 00:29:32,661 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:34,571 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:34,835 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:35,098 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:35,341 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:35,634 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:36,283 INFO L93 Difference]: Finished difference Result 1294 states and 1661 transitions. [2020-08-22 00:29:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:29:36,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-22 00:29:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:36,292 INFO L225 Difference]: With dead ends: 1294 [2020-08-22 00:29:36,293 INFO L226 Difference]: Without dead ends: 1291 [2020-08-22 00:29:36,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:29:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-08-22 00:29:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1159. [2020-08-22 00:29:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-22 00:29:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1430 transitions. [2020-08-22 00:29:36,488 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1430 transitions. Word has length 134 [2020-08-22 00:29:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:36,488 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1430 transitions. [2020-08-22 00:29:36,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1430 transitions. [2020-08-22 00:29:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-22 00:29:36,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:36,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:36,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:29:36,493 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1152526356, now seen corresponding path program 1 times [2020-08-22 00:29:36,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:36,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046343053] [2020-08-22 00:29:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,805 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 00:29:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 00:29:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 00:29:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 00:29:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 00:29:37,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046343053] [2020-08-22 00:29:37,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:37,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:29:37,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106291245] [2020-08-22 00:29:37,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:37,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:37,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:37,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:37,107 INFO L87 Difference]: Start difference. First operand 1159 states and 1430 transitions. Second operand 12 states. [2020-08-22 00:29:37,954 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:38,631 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:39,236 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:39,516 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:39,767 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:40,011 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:40,316 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:40,585 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:42,439 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:44,017 INFO L93 Difference]: Finished difference Result 2783 states and 3743 transitions. [2020-08-22 00:29:44,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 00:29:44,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-22 00:29:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:44,029 INFO L225 Difference]: With dead ends: 2783 [2020-08-22 00:29:44,029 INFO L226 Difference]: Without dead ends: 1944 [2020-08-22 00:29:44,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 00:29:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-08-22 00:29:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1551. [2020-08-22 00:29:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-08-22 00:29:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1933 transitions. [2020-08-22 00:29:44,281 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1933 transitions. Word has length 138 [2020-08-22 00:29:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:44,282 INFO L479 AbstractCegarLoop]: Abstraction has 1551 states and 1933 transitions. [2020-08-22 00:29:44,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1933 transitions. [2020-08-22 00:29:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:29:44,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:44,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:44,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:29:44,287 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -782495877, now seen corresponding path program 1 times [2020-08-22 00:29:44,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:44,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997216117] [2020-08-22 00:29:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,542 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:29:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 00:29:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 00:29:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 00:29:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 00:29:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 00:29:44,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997216117] [2020-08-22 00:29:44,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:44,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:29:44,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807019202] [2020-08-22 00:29:44,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:44,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:44,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:44,761 INFO L87 Difference]: Start difference. First operand 1551 states and 1933 transitions. Second operand 12 states. [2020-08-22 00:29:45,711 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:45,941 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:46,159 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:46,919 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:47,193 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:47,434 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:48,594 INFO L93 Difference]: Finished difference Result 2923 states and 3762 transitions. [2020-08-22 00:29:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:29:48,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-22 00:29:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:48,602 INFO L225 Difference]: With dead ends: 2923 [2020-08-22 00:29:48,602 INFO L226 Difference]: Without dead ends: 1396 [2020-08-22 00:29:48,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:29:48,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-08-22 00:29:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1328. [2020-08-22 00:29:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-22 00:29:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1625 transitions. [2020-08-22 00:29:48,862 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1625 transitions. Word has length 134 [2020-08-22 00:29:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:48,863 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1625 transitions. [2020-08-22 00:29:48,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1625 transitions. [2020-08-22 00:29:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 00:29:48,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:48,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:29:48,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:29:48,869 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 2082208677, now seen corresponding path program 2 times [2020-08-22 00:29:48,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:48,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726964108] [2020-08-22 00:29:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,149 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:29:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:29:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 00:29:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 00:29:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 00:29:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 00:29:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 00:29:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 00:29:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 00:29:49,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726964108] [2020-08-22 00:29:49,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:49,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:49,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297644595] [2020-08-22 00:29:49,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:49,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:49,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:49,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:49,490 INFO L87 Difference]: Start difference. First operand 1328 states and 1625 transitions. Second operand 13 states. [2020-08-22 00:29:50,652 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:50,932 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:52,886 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:29:53,161 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:53,408 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:53,856 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186