/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:29:55,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:29:55,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:29:55,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:29:55,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:29:55,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:29:55,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:29:55,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:29:55,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:29:55,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:29:55,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:29:55,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:29:55,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:29:55,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:29:55,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:29:55,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:29:55,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:29:55,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:29:55,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:29:55,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:29:55,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:29:55,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:29:55,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:29:55,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:29:55,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:29:55,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:29:55,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:29:55,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:29:55,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:29:55,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:29:55,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:29:55,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:29:55,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:29:55,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:29:55,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:29:55,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:29:55,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:29:55,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:29:55,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:29:55,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:29:55,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:29:55,078 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 04:29:55,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:29:55,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:29:55,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:29:55,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:29:55,101 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:29:55,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:29:55,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:29:55,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:29:55,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:29:55,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:29:55,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:29:55,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:29:55,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:29:55,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:29:55,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:29:55,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:29:55,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:29:55,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:29:55,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:29:55,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:29:55,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:29:55,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:29:55,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:29:55,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:29:55,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:29:55,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:29:55,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:29:55,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:29:55,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:29:55,106 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:29:55,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:29:55,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:29:55,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:29:55,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:29:55,423 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:29:55,423 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-22 04:29:55,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db556326d/9adff317de7f462f8377145588578871/FLAG1c89000d8 [2020-08-22 04:29:55,898 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:29:55,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-22 04:29:55,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db556326d/9adff317de7f462f8377145588578871/FLAG1c89000d8 [2020-08-22 04:29:56,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db556326d/9adff317de7f462f8377145588578871 [2020-08-22 04:29:56,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:29:56,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:29:56,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:56,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:29:56,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:29:56,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b4a4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56, skipping insertion in model container [2020-08-22 04:29:56,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:29:56,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:29:56,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:56,659 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:29:56,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:56,882 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:29:56,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56 WrapperNode [2020-08-22 04:29:56,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:56,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:29:56,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:29:56,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:29:56,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (1/1) ... [2020-08-22 04:29:56,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:29:56,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:29:56,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:29:56,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:29:56,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (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 04:29:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:29:57,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:29:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:29:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:29:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:29:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:29:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:29:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:29:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:29:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:29:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:29:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:29:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:29:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:29:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:29:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:29:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:29:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:29:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:29:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:29:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:29:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:29:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:29:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:29:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:29:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:29:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:29:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:29:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:29:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:29:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:29:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:29:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:29:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:29:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:29:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:29:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:29:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:29:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:29:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:29:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:29:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:29:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:29:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:29:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:29:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:29:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:29:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:29:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:29:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:29:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:29:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:29:58,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:29:58,201 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:29:58,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:58 BoogieIcfgContainer [2020-08-22 04:29:58,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:29:58,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:29:58,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:29:58,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:29:58,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:29:56" (1/3) ... [2020-08-22 04:29:58,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:58, skipping insertion in model container [2020-08-22 04:29:58,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:56" (2/3) ... [2020-08-22 04:29:58,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:58, skipping insertion in model container [2020-08-22 04:29:58,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:58" (3/3) ... [2020-08-22 04:29:58,214 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-22 04:29:58,224 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:29:58,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:29:58,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:29:58,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:29:58,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:29:58,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:29:58,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:29:58,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:29:58,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:29:58,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:29:58,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:29:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-22 04:29:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:29:58,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:58,305 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 04:29:58,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:58,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-22 04:29:58,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:58,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970858759] [2020-08-22 04:29:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,000 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:59,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:59,124 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 04:29:59,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970858759] [2020-08-22 04:29:59,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:59,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:29:59,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43806550] [2020-08-22 04:29:59,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:29:59,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:59,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:29:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:29:59,152 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-22 04:30:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:00,418 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-22 04:30:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:30:00,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 04:30:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:00,435 INFO L225 Difference]: With dead ends: 350 [2020-08-22 04:30:00,435 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 04:30:00,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:30:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 04:30:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-22 04:30:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 04:30:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-22 04:30:00,539 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-22 04:30:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-22 04:30:00,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:30:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-22 04:30:00,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 04:30:00,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:00,546 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] [2020-08-22 04:30:00,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:30:00,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:00,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:00,547 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-22 04:30:00,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:00,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097069639] [2020-08-22 04:30:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,929 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:30:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:30:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:30:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:00,971 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 04:30:00,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097069639] [2020-08-22 04:30:00,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:00,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:30:00,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130672505] [2020-08-22 04:30:00,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:30:00,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:30:00,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:30:00,975 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-22 04:30:01,346 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:02,336 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-22 04:30:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:30:02,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 04:30:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:02,341 INFO L225 Difference]: With dead ends: 279 [2020-08-22 04:30:02,341 INFO L226 Difference]: Without dead ends: 172 [2020-08-22 04:30:02,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 04:30:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-22 04:30:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-22 04:30:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 04:30:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-22 04:30:02,407 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-22 04:30:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:02,407 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-22 04:30:02,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:30:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-22 04:30:02,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 04:30:02,410 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:02,410 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] [2020-08-22 04:30:02,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:30:02,411 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:02,411 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-22 04:30:02,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:02,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110292045] [2020-08-22 04:30:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,710 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:30:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:02,791 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 04:30:02,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110292045] [2020-08-22 04:30:02,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:02,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:30:02,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845417700] [2020-08-22 04:30:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:30:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:30:02,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:30:02,793 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-22 04:30:03,091 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:03,412 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:03,653 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:03,879 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:05,292 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-22 04:30:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:30:05,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 04:30:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:05,296 INFO L225 Difference]: With dead ends: 292 [2020-08-22 04:30:05,296 INFO L226 Difference]: Without dead ends: 172 [2020-08-22 04:30:05,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-22 04:30:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-22 04:30:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 04:30:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-22 04:30:05,338 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-22 04:30:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:05,339 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-22 04:30:05,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-22 04:30:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 04:30:05,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:05,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:05,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:30:05,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-22 04:30:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111756351] [2020-08-22 04:30:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,625 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:30:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 04:30:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 04:30:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:30:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:05,709 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 04:30:05,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111756351] [2020-08-22 04:30:05,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:05,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:30:05,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940710402] [2020-08-22 04:30:05,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:30:05,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:30:05,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:30:05,712 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-22 04:30:06,025 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:07,229 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:07,986 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-22 04:30:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:30:07,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-22 04:30:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:07,990 INFO L225 Difference]: With dead ends: 407 [2020-08-22 04:30:07,991 INFO L226 Difference]: Without dead ends: 287 [2020-08-22 04:30:07,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:30:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-22 04:30:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-22 04:30:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-22 04:30:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-22 04:30:08,075 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-22 04:30:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:08,076 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-22 04:30:08,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:30:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-22 04:30:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:30:08,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:08,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:08,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:30:08,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-22 04:30:08,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:08,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005141219] [2020-08-22 04:30:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,359 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:30:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:30:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:30:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 04:30:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:08,491 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 04:30:08,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005141219] [2020-08-22 04:30:08,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:08,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:30:08,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419144839] [2020-08-22 04:30:08,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:30:08,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:08,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:30:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:30:08,498 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-22 04:30:08,867 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:10,151 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:10,436 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:10,676 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:10,921 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:11,779 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-22 04:30:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:30:11,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-22 04:30:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:11,784 INFO L225 Difference]: With dead ends: 641 [2020-08-22 04:30:11,784 INFO L226 Difference]: Without dead ends: 421 [2020-08-22 04:30:11,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:30:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-22 04:30:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-22 04:30:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-22 04:30:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-22 04:30:11,862 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-22 04:30:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:11,863 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-22 04:30:11,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-22 04:30:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:30:11,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:11,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:11,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:30:11,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-22 04:30:11,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:11,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558705340] [2020-08-22 04:30:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,144 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:30:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:30:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:30:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:30:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:30:12,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558705340] [2020-08-22 04:30:12,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:12,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:30:12,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493460597] [2020-08-22 04:30:12,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:30:12,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:12,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:30:12,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:30:12,305 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-22 04:30:12,644 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:13,137 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:14,690 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:16,731 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-22 04:30:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:30:16,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-22 04:30:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:16,739 INFO L225 Difference]: With dead ends: 980 [2020-08-22 04:30:16,739 INFO L226 Difference]: Without dead ends: 749 [2020-08-22 04:30:16,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:30:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-22 04:30:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-22 04:30:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-22 04:30:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-22 04:30:16,891 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-22 04:30:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:16,891 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-22 04:30:16,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:30:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-22 04:30:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:30:16,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:16,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:16,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:30:16,894 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:16,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-22 04:30:16,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:16,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106667312] [2020-08-22 04:30:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,115 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:30:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:30:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:30:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:30:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,259 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 04:30:17,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106667312] [2020-08-22 04:30:17,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:17,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:30:17,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339645233] [2020-08-22 04:30:17,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:30:17,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:30:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:30:17,262 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-22 04:30:18,086 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:18,302 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:18,535 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:19,777 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-22 04:30:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:30:19,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-22 04:30:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:19,786 INFO L225 Difference]: With dead ends: 1250 [2020-08-22 04:30:19,786 INFO L226 Difference]: Without dead ends: 723 [2020-08-22 04:30:19,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-22 04:30:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-22 04:30:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-22 04:30:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-22 04:30:19,923 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-22 04:30:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:19,923 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-22 04:30:19,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-22 04:30:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 04:30:19,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:19,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:19,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:30:19,926 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-22 04:30:19,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:19,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254768805] [2020-08-22 04:30:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,194 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:20,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:30:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:30:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:30:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:30:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,357 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 04:30:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254768805] [2020-08-22 04:30:20,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:20,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:30:20,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445474735] [2020-08-22 04:30:20,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:30:20,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:30:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:20,360 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-22 04:30:20,907 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:21,141 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:21,374 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:22,046 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:22,275 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:22,521 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:22,743 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:23,971 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-22 04:30:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:30:23,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-22 04:30:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:23,979 INFO L225 Difference]: With dead ends: 1343 [2020-08-22 04:30:23,979 INFO L226 Difference]: Without dead ends: 689 [2020-08-22 04:30:23,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 04:30:23,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-22 04:30:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-22 04:30:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 04:30:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-22 04:30:24,163 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-22 04:30:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:24,164 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-22 04:30:24,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:30:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-22 04:30:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-22 04:30:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:24,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:30:24,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:30:24,171 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:24,171 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-22 04:30:24,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:24,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153396213] [2020-08-22 04:30:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,482 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:30:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:30:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 04:30:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 04:30:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:24,622 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 04:30:24,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153396213] [2020-08-22 04:30:24,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:24,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 04:30:24,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770148610] [2020-08-22 04:30:24,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:30:24,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:30:24,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:30:24,625 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-22 04:30:25,076 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:25,313 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:25,545 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:26,513 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:27,126 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:27,438 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:27,710 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:28,454 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:28,748 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:29,333 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-22 04:30:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 04:30:29,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-22 04:30:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:29,339 INFO L225 Difference]: With dead ends: 1307 [2020-08-22 04:30:29,339 INFO L226 Difference]: Without dead ends: 682 [2020-08-22 04:30:29,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:30:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-22 04:30:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-22 04:30:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 04:30:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-22 04:30:29,473 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-22 04:30:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:29,475 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-22 04:30:29,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:30:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-22 04:30:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-22 04:30:29,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:29,478 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:29,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:30:29,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-22 04:30:29,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:29,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939162813] [2020-08-22 04:30:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,757 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:29,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:30:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:30:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 04:30:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 04:30:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:30:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 04:30:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 04:30:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 04:30:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 04:30:30,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939162813] [2020-08-22 04:30:30,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:30,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:30:30,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169071855] [2020-08-22 04:30:30,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:30:30,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:30,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:30:30,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:30:30,016 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-22 04:30:31,247 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:31,472 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:30:31,700 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:31,925 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:32,902 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-22 04:30:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:30:32,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-22 04:30:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:32,908 INFO L225 Difference]: With dead ends: 1216 [2020-08-22 04:30:32,908 INFO L226 Difference]: Without dead ends: 670 [2020-08-22 04:30:32,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:30:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-22 04:30:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-22 04:30:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 04:30:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-22 04:30:33,024 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-22 04:30:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:33,024 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-22 04:30:33,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:30:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-22 04:30:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-22 04:30:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:33,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:33,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:30:33,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-22 04:30:33,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:33,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139103494] [2020-08-22 04:30:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,302 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:33,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:30:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:30:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 04:30:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 04:30:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:30:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 04:30:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 04:30:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 04:30:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 04:30:33,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139103494] [2020-08-22 04:30:33,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:33,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:30:33,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303041919] [2020-08-22 04:30:33,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:30:33,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:30:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:33,490 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-22 04:30:34,025 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:34,279 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:34,496 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:35,115 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:35,349 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:35,567 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:36,648 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-22 04:30:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:30:36,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-22 04:30:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:36,652 INFO L225 Difference]: With dead ends: 1124 [2020-08-22 04:30:36,652 INFO L226 Difference]: Without dead ends: 573 [2020-08-22 04:30:36,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:30:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-22 04:30:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-22 04:30:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-22 04:30:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-22 04:30:36,752 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-22 04:30:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:36,752 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-22 04:30:36,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:30:36,753 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-22 04:30:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 04:30:36,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:36,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:36,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:30:36,755 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:36,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-22 04:30:36,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:36,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508012294] [2020-08-22 04:30:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,006 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:30:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:30:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 04:30:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:30:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:30:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 04:30:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 04:30:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 04:30:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-22 04:30:37,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508012294] [2020-08-22 04:30:37,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:37,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 04:30:37,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554587733] [2020-08-22 04:30:37,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:30:37,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:30:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:30:37,176 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-22 04:30:37,545 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:38,147 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:39,057 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:39,554 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-22 04:30:40,016 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-22 04:30:40,241 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:41,791 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-22 04:30:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:30:41,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-22 04:30:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:41,798 INFO L225 Difference]: With dead ends: 1637 [2020-08-22 04:30:41,798 INFO L226 Difference]: Without dead ends: 1109 [2020-08-22 04:30:41,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-22 04:30:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-22 04:30:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-22 04:30:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-22 04:30:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-22 04:30:41,994 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-22 04:30:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:41,995 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-22 04:30:41,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:30:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-22 04:30:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 04:30:41,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:41,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:41,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:30:41,998 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-22 04:30:41,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:41,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330604108] [2020-08-22 04:30:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,297 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:30:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:30:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:30:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:30:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:30:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:30:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 04:30:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 04:30:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 04:30:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:30:42,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330604108] [2020-08-22 04:30:42,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:42,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:30:42,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919209101] [2020-08-22 04:30:42,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:30:42,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:30:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:30:42,571 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-22 04:30:43,197 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:43,425 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:43,643 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:44,209 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:45,284 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:45,605 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:45,889 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:46,133 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:30:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:48,114 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-22 04:30:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 04:30:48,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-22 04:30:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:48,121 INFO L225 Difference]: With dead ends: 2187 [2020-08-22 04:30:48,121 INFO L226 Difference]: Without dead ends: 1134 [2020-08-22 04:30:48,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-22 04:30:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-22 04:30:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-22 04:30:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-22 04:30:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-22 04:30:48,337 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-22 04:30:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:48,338 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-22 04:30:48,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:30:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-22 04:30:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 04:30:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:48,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:48,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 04:30:48,348 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:48,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-22 04:30:48,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:48,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55481198] [2020-08-22 04:30:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,598 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:30:48,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:30:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:30:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:30:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:30:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:30:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:30:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:30:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 04:30:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 04:30:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:30:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:30:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 04:30:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 04:30:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 04:30:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-22 04:30:48,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55481198] [2020-08-22 04:30:48,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:30:48,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:30:48,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610013003] [2020-08-22 04:30:48,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:30:48,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:48,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:30:48,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:30:48,869 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-22 04:30:49,263 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:30:49,934 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:30:51,049 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:51,373 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:51,852 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:30:52,312 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:30:53,258 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:53,509 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:53,751 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:53,990 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:54,240 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:54,471 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:30:54,727 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:54,963 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:30:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:55,750 INFO L93 Difference]: Finished difference Result 1774 states and 2073 transitions. [2020-08-22 04:30:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 04:30:55,750 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 149 [2020-08-22 04:30:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:55,756 INFO L225 Difference]: With dead ends: 1774 [2020-08-22 04:30:55,756 INFO L226 Difference]: Without dead ends: 929 [2020-08-22 04:30:55,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 04:30:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states.